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bce1a4c8-5857-4773-9296-cec7b69efd50 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/limited-textarea.md | unknown | 1aeea2f2-0803-4e44-bf4d-28c684eadd26 | 0 | SemanticChunker@1.0.0 | f0abd14973c75599bd4999375d0808040d575d5112991bcfa5f5133bc650c1e4 | ---
title: Create a textarea React component with word or character limit
shortTitle: Limited word or character textarea
language: react
tags: [components,input,state,callback,event]
cover: flower-portrait-2
excerpt: Create your custom textarea components, with a word or character limit in React.
listed: true
dateModif... | unknown | unknown | ---
title: Create a textarea React component with word or character limit
shortTitle: Limited word or character textarea
language: react
tags: [components,input,state,callback,event]
cover: flower-portrait-2
excerpt: Create your custom textarea components, with a word or character limit in React.
listed: true
dateModif... | ---
title: Create a textarea React component with word or character limit
shortTitle: Limited word or character textarea
language: react
tags: [components,input,state,callback,event]
cover: flower-portrait-2
excerpt: Create your custom textarea components, with a word or character limit in React.
listed: true
dateModif... | code_snippets | ||
cfd7daa2-e4cb-4c1a-a32b-783ff8c37c1e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/limited-textarea.md | unknown | 1aeea2f2-0803-4e44-bf4d-28c684eadd26 | 1 | SemanticChunker@1.0.0 | 44854f50a66e337324e29414bc5ee7fb2d6272c788cf2422bd8a3c9db0b87f91 | [Uncontrolled textarea element]
## Uncontrolled textarea element
The simplest version of a `<textarea>` component is an **uncontrolled** one. It uses the `defaultValue` prop passed down from the parent as the initial value of the input field. The `onChange` event is used to fire the `onValueChange` callback and send ... | unknown | unknown | [Uncontrolled textarea element]
## Uncontrolled textarea element
The simplest version of a `<textarea>` component is an **uncontrolled** one. It uses the `defaultValue` prop passed down from the parent as the initial value of the input field. The `onChange` event is used to fire the `onValueChange` callback and send ... | [Uncontrolled textarea element]
## Uncontrolled textarea element
The simplest version of a `<textarea>` component is an **uncontrolled** one. It uses the `defaultValue` prop passed down from the parent as the initial value of the input field. The `onChange` event is used to fire the `onValueChange` callback and send ... | code_snippets | ||
01546c20-502a-42a8-8869-1f9ef19033e5 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/lazy-load-image.md | unknown | c3c3f460-05b6-4b53-8caf-14797909da52 | 1 | SemanticChunker@1.0.0 | 06b47d2c7c7323f8f999862435cc5a4ac0c4ca3764483eb71a02876b603928c2 | ```jsx
const LazyLoadImage = ({
alt,
src,
className,
loadInitially = false,
observerOptions = { root: null, rootMargin: '200px 0px' },
...props
}) => {
const observerRef = React.useRef(null);
const imgRef = React.useRef(null);
const [isLoaded, setIsLoaded] = React.useState(loadInitially);
const observerCallb... | unknown | unknown | ```jsx
const LazyLoadImage = ({
alt,
src,
className,
loadInitially = false,
observerOptions = { root: null, rootMargin: '200px 0px' },
...props
}) => {
const observerRef = React.useRef(null);
const imgRef = React.useRef(null);
const [isLoaded, setIsLoaded] = React.useState(loadInitially);
const observerCallb... | ```jsx
const LazyLoadImage = ({
alt,
src,
className,
loadInitially = false,
observerOptions = { root: null, rootMargin: '200px 0px' },
...props
}) => {
const observerRef = React.useRef(null);
const imgRef = React.useRef(null);
const [isLoaded, setIsLoaded] = React.useState(loadInitially);
const observerCallb... | code_snippets | ||
4ca04199-8ddc-4aee-953e-1194b38a7715 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/lazy-load-image.md | unknown | c3c3f460-05b6-4b53-8caf-14797909da52 | 0 | SemanticChunker@1.0.0 | 09591c100e828c6750dcf78035649cbb53182959dea9f085f0cf3acc7ba04500 | ---
title: Lazy-loading images in React
shortTitle: Lazy load image
language: react
tags: [components,effect,state]
cover: strawberries
excerpt: Learn how to create your own lazy loading image component in React.
listed: true
dateModified: 2024-06-14
---
Lazy loading images is a great way to **improve the performance*... | unknown | unknown | ---
title: Lazy-loading images in React
shortTitle: Lazy load image
language: react
tags: [components,effect,state]
cover: strawberries
excerpt: Learn how to create your own lazy loading image component in React.
listed: true
dateModified: 2024-06-14
---
Lazy loading images is a great way to **improve the performance*... | ---
title: Lazy-loading images in React
shortTitle: Lazy load image
language: react
tags: [components,effect,state]
cover: strawberries
excerpt: Learn how to create your own lazy loading image component in React.
listed: true
dateModified: 2024-06-14
---
Lazy loading images is a great way to **improve the performance*... | code_snippets | ||
c7350e6f-119f-4908-88ab-bc79ca767411 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/multiselect-checkbox.md | unknown | fd98b7c7-2ca7-48ef-9083-18e2a4ca0091 | 1 | SemanticChunker@1.0.0 | 0f8ca2056537c94dd275d7b7569a88084581898b4e8b42a91a70e9d3a2f37d4e | ```jsx
const MultiselectCheckbox = ({ options, onChange }) => {
const [data, setData] = React.useState(options);
const toggle = index => {
const newData = [...data];
newData.splice(index, 1, {
label: data[index].label,
checked: !data[index].checked
});
setData(newData);
onChange(newData.filter(x => x.checked)... | unknown | unknown | ```jsx
const MultiselectCheckbox = ({ options, onChange }) => {
const [data, setData] = React.useState(options);
const toggle = index => {
const newData = [...data];
newData.splice(index, 1, {
label: data[index].label,
checked: !data[index].checked
});
setData(newData);
onChange(newData.filter(x => x.checked)... | ```jsx
const MultiselectCheckbox = ({ options, onChange }) => {
const [data, setData] = React.useState(options);
const toggle = index => {
const newData = [...data];
newData.splice(index, 1, {
label: data[index].label,
checked: !data[index].checked
});
setData(newData);
onChange(newData.filter(x => x.checked)... | code_snippets | ||
ef6da3cb-814d-44d4-9e09-6d7e7e5b02cf | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/multiselect-checkbox.md | unknown | fd98b7c7-2ca7-48ef-9083-18e2a4ca0091 | 0 | SemanticChunker@1.0.0 | 45e709d001256fdf600650b36d0b1bb084e6c8dc16baf6948cb033c7b27cdce6 | ---
title: Stateful checkbox with multiple selection
language: react
tags: [components,input,state,array]
cover: violin
excerpt: Render a checkbox list that uses a callback function to pass its selected value/values to the parent component.
listed: true
dateModified: 2024-06-13
---
A **group of checkboxes** can be use... | unknown | unknown | ---
title: Stateful checkbox with multiple selection
language: react
tags: [components,input,state,array]
cover: violin
excerpt: Render a checkbox list that uses a callback function to pass its selected value/values to the parent component.
listed: true
dateModified: 2024-06-13
---
A **group of checkboxes** can be use... | ---
title: Stateful checkbox with multiple selection
language: react
tags: [components,input,state,array]
cover: violin
excerpt: Render a checkbox list that uses a callback function to pass its selected value/values to the parent component.
listed: true
dateModified: 2024-06-13
---
A **group of checkboxes** can be use... | code_snippets | ||
75d5c688-f9fa-4ed9-88ac-69676456cc03 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/password-revealer.md | unknown | 2f42f7da-ffb3-4d1f-9f5f-6d957782230f | 0 | SemanticChunker@1.0.0 | 059c75ae854cc125c5f87ccd6248a87f65741e57dcfb49e448542325c01da8f3 | ---
title: Show/hide password toggle component
shortTitle: Password revealer
language: react
tags: [components,input,state]
cover: thread
excerpt: Ever wanted to show the password the user is typing? Here's how you can create a password input field with a reveal button in React.
listed: true
dateModified: 2024-06-14
--... | unknown | unknown | ---
title: Show/hide password toggle component
shortTitle: Password revealer
language: react
tags: [components,input,state]
cover: thread
excerpt: Ever wanted to show the password the user is typing? Here's how you can create a password input field with a reveal button in React.
listed: true
dateModified: 2024-06-14
--... | ---
title: Show/hide password toggle component
shortTitle: Password revealer
language: react
tags: [components,input,state]
cover: thread
excerpt: Ever wanted to show the password the user is typing? Here's how you can create a password input field with a reveal button in React.
listed: true
dateModified: 2024-06-14
--... | code_snippets | ||
313a0b35-294a-4757-9797-e11d418d299b | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/event-listener-hooks.md | unknown | 21e2ce37-67a1-4c87-8045-38f8961159c6 | 1 | SemanticChunker@1.0.0 | ae0301a53bfd54b9e151495c4ada910eafaa8c70c65d399961e3409a0da1b40d | [`useEventListener` hook]
## `useEventListener` hook
A simple `useEventListener` hook can be useful for adding **event listeners** to elements and cleaning them up when the component unmounts.
In order to implement it, you can use the `useRef()` hook to create a ref that will hold the handler, and the `useEffect()` ... | unknown | unknown | [`useEventListener` hook]
## `useEventListener` hook
A simple `useEventListener` hook can be useful for adding **event listeners** to elements and cleaning them up when the component unmounts.
In order to implement it, you can use the `useRef()` hook to create a ref that will hold the handler, and the `useEffect()` ... | [`useEventListener` hook]
## `useEventListener` hook
A simple `useEventListener` hook can be useful for adding **event listeners** to elements and cleaning them up when the component unmounts.
In order to implement it, you can use the `useRef()` hook to create a ref that will hold the handler, and the `useEffect()` ... | code_snippets | ||
3fe6d34c-ad9b-4280-a806-10df918810d5 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/event-listener-hooks.md | unknown | 21e2ce37-67a1-4c87-8045-38f8961159c6 | 2 | SemanticChunker@1.0.0 | ebe59c2a3bb94f5048b6c005fa949755f842309e228a89cb98d9a682dabbca2a | [`useEventListener` hook > `useKeyPress` hook]
## `useKeyPress` hook
A very common use-case for event listeners is to listen for **key presses**. The `useKeyPress` hook listens for changes in the pressed state of a given key.
Its implementation uses the `useState()` hook to create a state variable that holds the pre... | unknown | unknown | [`useEventListener` hook > `useKeyPress` hook]
## `useKeyPress` hook
A very common use-case for event listeners is to listen for **key presses**. The `useKeyPress` hook listens for changes in the pressed state of a given key.
Its implementation uses the `useState()` hook to create a state variable that holds the pre... | [`useEventListener` hook > `useKeyPress` hook]
## `useKeyPress` hook
A very common use-case for event listeners is to listen for **key presses**. The `useKeyPress` hook listens for changes in the pressed state of a given key.
Its implementation uses the `useState()` hook to create a state variable that holds the pre... | code_snippets | ||
5a45691a-32f4-4cd8-9584-1cee8f035d55 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/event-listener-hooks.md | unknown | 21e2ce37-67a1-4c87-8045-38f8961159c6 | 3 | SemanticChunker@1.0.0 | f97bee117083160f4301b100f17af23c0cd9a672cbc496576e965ac0f5462390 | [`useEventListener` hook > `useHover` hook]
## `useHover` hook
A variation of the `useEventListener` hook is the `useHover` hook, which listens for the `'mouseover'` and `'mouseout'` events on a given element. As these mouse events are common, this hook can be useful for handling hover states.
The implementation is ... | unknown | unknown | [`useEventListener` hook > `useHover` hook]
## `useHover` hook
A variation of the `useEventListener` hook is the `useHover` hook, which listens for the `'mouseover'` and `'mouseout'` events on a given element. As these mouse events are common, this hook can be useful for handling hover states.
The implementation is ... | [`useEventListener` hook > `useHover` hook]
## `useHover` hook
A variation of the `useEventListener` hook is the `useHover` hook, which listens for the `'mouseover'` and `'mouseout'` events on a given element. As these mouse events are common, this hook can be useful for handling hover states.
The implementation is ... | code_snippets | ||
8caacff9-4bf0-49b5-a621-6464313b20d6 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/event-listener-hooks.md | unknown | 21e2ce37-67a1-4c87-8045-38f8961159c6 | 0 | SemanticChunker@1.0.0 | c50cf9e4e6935fff3e0bb6faf2c7d8b192d4ac8e3fc68ae14ddb9a9404716926 | ---
title: Listening for events with React hooks
shortTitle: Event listener hooks
language: react
tags: [hooks,state,effect,event]
cover: beach-riders
excerpt: Learn how to create custom hooks to listen for events in React.
listed: true
dateModified: 2024-06-28
---
React already provides a way to handle events on comp... | unknown | unknown | ---
title: Listening for events with React hooks
shortTitle: Event listener hooks
language: react
tags: [hooks,state,effect,event]
cover: beach-riders
excerpt: Learn how to create custom hooks to listen for events in React.
listed: true
dateModified: 2024-06-28
---
React already provides a way to handle events on comp... | ---
title: Listening for events with React hooks
shortTitle: Event listener hooks
language: react
tags: [hooks,state,effect,event]
cover: beach-riders
excerpt: Learn how to create custom hooks to listen for events in React.
listed: true
dateModified: 2024-06-28
---
React already provides a way to handle events on comp... | code_snippets | ||
e1b7528a-69b5-4fdf-86a5-4fa1a42753ab | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/event-listener-hooks.md | unknown | 21e2ce37-67a1-4c87-8045-38f8961159c6 | 4 | SemanticChunker@1.0.0 | 3b2e25e19688455d144bdfde2c08923336e3512c8fe23225d59f7d81594326fe | [`useEventListener` hook > `useOnGlobalEvent` hook]
## `useOnGlobalEvent` hook
Listening for events on the **global object** can be useful in some cases. The `useOnGlobalEvent` hook listens for events on the global object and executes a callback whenever an event occurs.
The implementation is not much different from... | unknown | unknown | [`useEventListener` hook > `useOnGlobalEvent` hook]
## `useOnGlobalEvent` hook
Listening for events on the **global object** can be useful in some cases. The `useOnGlobalEvent` hook listens for events on the global object and executes a callback whenever an event occurs.
The implementation is not much different from... | [`useEventListener` hook > `useOnGlobalEvent` hook]
## `useOnGlobalEvent` hook
Listening for events on the **global object** can be useful in some cases. The `useOnGlobalEvent` hook listens for events on the global object and executes a callback whenever an event occurs.
The implementation is not much different from... | code_snippets | ||
020d47fb-df1a-4c0e-a9ee-d22341157490 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 4 | SemanticChunker@1.0.0 | 4bfc7734cf1ad5a19f3059ec769f7db80b7bed9d2a0524464a4b368d5e4222cd | [Data list > Expandable object tree view]
## Expandable object tree view
Finally, you can create a **tree view** component that can display **nested objects**. This component uses **recursion** to render nested objects as nested `<TreeView>` components. The `TreeView` component takes a `data` prop, which is an object... | unknown | unknown | [Data list > Expandable object tree view]
## Expandable object tree view
Finally, you can create a **tree view** component that can display **nested objects**. This component uses **recursion** to render nested objects as nested `<TreeView>` components. The `TreeView` component takes a `data` prop, which is an object... | [Data list > Expandable object tree view]
## Expandable object tree view
Finally, you can create a **tree view** component that can display **nested objects**. This component uses **recursion** to render nested objects as nested `<TreeView>` components. The `TreeView` component takes a `data` prop, which is an object... | code_snippets | ||
2093cf10-8bfc-489f-886e-ebe0a1fec6b0 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 1 | SemanticChunker@1.0.0 | 7cf96d6f50b60e2f80ce2c4d9c2c1a6190e761a079d3718ae6bdbe2ea1e53021 | [Data list]
## Data list
The simplest mapping is an **array of primitives** to a **list** of elements. All you really need is `Array.prototype.map()` to render each item as a `<li>` element. In addition to that, you should use a `key` prop to help React identify each item. Finally, wrap the result in an `<ol>` or `<u... | unknown | unknown | [Data list]
## Data list
The simplest mapping is an **array of primitives** to a **list** of elements. All you really need is `Array.prototype.map()` to render each item as a `<li>` element. In addition to that, you should use a `key` prop to help React identify each item. Finally, wrap the result in an `<ol>` or `<u... | [Data list]
## Data list
The simplest mapping is an **array of primitives** to a **list** of elements. All you really need is `Array.prototype.map()` to render each item as a `<li>` element. In addition to that, you should use a `key` prop to help React identify each item. Finally, wrap the result in an `<ol>` or `<u... | code_snippets | ||
2b0d91ce-9d98-413f-98db-f962acd3d91c | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 6 | SemanticChunker@1.0.0 | 64cdb755510e8f4c77bad5953f173fe5f4cecf8fe8190d057704360d6e069a7d | [Data list > Expandable object tree view]
```css
.tree-element {
margin: 0 0 0 4px;
position: relative;
}
.tree-element.is-child {
margin-left: 16px;
}
div.tree-element::before {
content: '';
position: absolute;
top: 24px;
left: 1px;
height: calc(100% - 48px);
border-left: 1px solid gray;
}
p.tree-element ... | unknown | unknown | [Data list > Expandable object tree view]
```css
.tree-element {
margin: 0 0 0 4px;
position: relative;
}
.tree-element.is-child {
margin-left: 16px;
}
div.tree-element::before {
content: '';
position: absolute;
top: 24px;
left: 1px;
height: calc(100% - 48px);
border-left: 1px solid gray;
}
p.tree-element ... | [Data list > Expandable object tree view]
```css
.tree-element {
margin: 0 0 0 4px;
position: relative;
}
.tree-element.is-child {
margin-left: 16px;
}
div.tree-element::before {
content: '';
position: absolute;
top: 24px;
left: 1px;
height: calc(100% - 48px);
border-left: 1px solid gray;
}
p.tree-element ... | code_snippets | ||
3bc34375-7e26-4a40-8673-617f48fb7f9f | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 2 | SemanticChunker@1.0.0 | 2359cea1a1ad0d63a103fb8ae2bdc3ba8ae989c153f2ad49b91210a410b42bf9 | [Data list > Data table]
## Data table
A very similar use-case is mapping an **array of primitives** to a **table**. The process is almost identical, but this time you render each item as a `<tr>` element with two `<td>` children. The first `<td>` contains the index of the item, while the second one contains the item... | unknown | unknown | [Data list > Data table]
## Data table
A very similar use-case is mapping an **array of primitives** to a **table**. The process is almost identical, but this time you render each item as a `<tr>` element with two `<td>` children. The first `<td>` contains the index of the item, while the second one contains the item... | [Data list > Data table]
## Data table
A very similar use-case is mapping an **array of primitives** to a **table**. The process is almost identical, but this time you render each item as a `<tr>` element with two `<td>` children. The first `<td>` contains the index of the item, while the second one contains the item... | code_snippets | ||
4dd1b3ad-cbd6-449a-9586-5ae5b341e7c4 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 0 | SemanticChunker@1.0.0 | f672eaa7e198038a2d509307b3645b012a34093b8c54627f4f3f5bb7f3f1475b | ---
title: Mapping data structures to React components
shortTitle: Data mapping components
language: react
tags: [components,array,object,state,recursion]
cover: interior-14
excerpt: Ever wanted to transform an array into a table or an object into a tree view? Here are some React components that can help you do just th... | unknown | unknown | ---
title: Mapping data structures to React components
shortTitle: Data mapping components
language: react
tags: [components,array,object,state,recursion]
cover: interior-14
excerpt: Ever wanted to transform an array into a table or an object into a tree view? Here are some React components that can help you do just th... | ---
title: Mapping data structures to React components
shortTitle: Data mapping components
language: react
tags: [components,array,object,state,recursion]
cover: interior-14
excerpt: Ever wanted to transform an array into a table or an object into a tree view? Here are some React components that can help you do just th... | code_snippets | ||
55bd7b3f-caa9-4533-8e6c-dbad23ec1d54 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 3 | SemanticChunker@1.0.0 | 6a7d3834313daa3949087bbc18431bcf663c3c06d033c5c56475cb1e92891bb9 | [Data list > Object table view]
## Object table view
For more complex structures, such as **arrays of objects**, you'll need a more sophisticated component. Instead of rendering each item as a `<tr>` element, you'll need to render each object as a `<tr>` element with a `<td>` for each key in the object. This way, you... | unknown | unknown | [Data list > Object table view]
## Object table view
For more complex structures, such as **arrays of objects**, you'll need a more sophisticated component. Instead of rendering each item as a `<tr>` element, you'll need to render each object as a `<tr>` element with a `<td>` for each key in the object. This way, you... | [Data list > Object table view]
## Object table view
For more complex structures, such as **arrays of objects**, you'll need a more sophisticated component. Instead of rendering each item as a `<tr>` element, you'll need to render each object as a `<tr>` element with a `<td>` for each key in the object. This way, you... | code_snippets | ||
b72baab0-b591-4c3d-ab5f-58b87574307d | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/data-mapping-components.md | unknown | c86c2735-3676-48de-baca-c56f26766419 | 5 | SemanticChunker@1.0.0 | b28fec175432c2da2ef78f3aaa09afe7a8dfd5cd0af3aa648eb05bf4be50216b | [Data list > Expandable object tree view]
```jsx
const TreeView = ({
data,
toggled = true,
name = null,
isLast = true,
isChildElement = false,
isParentToggled = true
}) => {
const [isToggled, setIsToggled] = React.useState(toggled);
const isDataArray = Array.isArray(data);
return (
<div
className={`tree-el... | unknown | unknown | [Data list > Expandable object tree view]
```jsx
const TreeView = ({
data,
toggled = true,
name = null,
isLast = true,
isChildElement = false,
isParentToggled = true
}) => {
const [isToggled, setIsToggled] = React.useState(toggled);
const isDataArray = Array.isArray(data);
return (
<div
className={`tree-el... | [Data list > Expandable object tree view]
```jsx
const TreeView = ({
data,
toggled = true,
name = null,
isLast = true,
isChildElement = false,
isParentToggled = true
}) => {
const [isToggled, setIsToggled] = React.useState(toggled);
const isDataArray = Array.isArray(data);
return (
<div
className={`tree-el... | code_snippets | ||
64bc0a41-21f6-445d-ae44-134818eff78c | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/file-drop.md | unknown | f8d2179a-ed70-40ed-9b23-a7a3a5206a63 | 2 | SemanticChunker@1.0.0 | 2c265ed0841d33d03930da1e1e8afe935d9509e118eb7f0d16ab8512e1c7ced5 | ```css
.filedrop {
min-height: 120px;
border: 3px solid #d3d3d3;
text-align: center;
font-size: 24px;
padding: 32px;
border-radius: 4px;
}
.filedrop.drag {
border: 3px dashed #1e90ff;
}
.filedrop.ready {
border: 3px solid #32cd32;
}
```
</code-tabs> | unknown | unknown | ```css
.filedrop {
min-height: 120px;
border: 3px solid #d3d3d3;
text-align: center;
font-size: 24px;
padding: 32px;
border-radius: 4px;
}
.filedrop.drag {
border: 3px dashed #1e90ff;
}
.filedrop.ready {
border: 3px solid #32cd32;
}
```
</code-tabs> | ```css
.filedrop {
min-height: 120px;
border: 3px solid #d3d3d3;
text-align: center;
font-size: 24px;
padding: 32px;
border-radius: 4px;
}
.filedrop.drag {
border: 3px dashed #1e90ff;
}
.filedrop.ready {
border: 3px solid #32cd32;
}
```
</code-tabs> | code_snippets | ||
aafb7105-c3ea-4c41-bf51-c3aaf76d61f1 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/file-drop.md | unknown | f8d2179a-ed70-40ed-9b23-a7a3a5206a63 | 0 | SemanticChunker@1.0.0 | de1b803696afdee6f8c52fb95483ef03828a9022b97c31370934c73e19cbec4c | ---
title: File drag and drop area
language: react
tags: [components,input,state,effect,event]
cover: man-red-sunset
excerpt: Create a file drag and drop React component for a single file.
listed: true
dateModified: 2024-06-11
---
Drag and drop areas for **file selection** are arguably the superior way to handle file ... | unknown | unknown | ---
title: File drag and drop area
language: react
tags: [components,input,state,effect,event]
cover: man-red-sunset
excerpt: Create a file drag and drop React component for a single file.
listed: true
dateModified: 2024-06-11
---
Drag and drop areas for **file selection** are arguably the superior way to handle file ... | ---
title: File drag and drop area
language: react
tags: [components,input,state,effect,event]
cover: man-red-sunset
excerpt: Create a file drag and drop React component for a single file.
listed: true
dateModified: 2024-06-11
---
Drag and drop areas for **file selection** are arguably the superior way to handle file ... | code_snippets | ||
d0f3e673-7c86-4cd7-a226-321d6f1a5a6e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/file-drop.md | unknown | f8d2179a-ed70-40ed-9b23-a7a3a5206a63 | 1 | SemanticChunker@1.0.0 | 5d5ea0dfea4f91c9c7d0607c97edba3f3aa6a031b5a3469eb6f261ee938e8284 | ```jsx
const FileDrop = ({ onDrop }) => {
const [drag, setDrag] = React.useState(false);
const [filename, setFilename] = React.useState('');
let dropRef = React.createRef();
let dragCounter = 0;
const handleDrag = e => {
e.preventDefault();
e.stopPropagation();
};
const handleDragIn = e => {
e.preventDefaul... | unknown | unknown | ```jsx
const FileDrop = ({ onDrop }) => {
const [drag, setDrag] = React.useState(false);
const [filename, setFilename] = React.useState('');
let dropRef = React.createRef();
let dragCounter = 0;
const handleDrag = e => {
e.preventDefault();
e.stopPropagation();
};
const handleDragIn = e => {
e.preventDefaul... | ```jsx
const FileDrop = ({ onDrop }) => {
const [drag, setDrag] = React.useState(false);
const [filename, setFilename] = React.useState('');
let dropRef = React.createRef();
let dragCounter = 0;
const handleDrag = e => {
e.preventDefault();
e.stopPropagation();
};
const handleDragIn = e => {
e.preventDefaul... | code_snippets | ||
26a706c8-c53f-4f6e-86ef-547fa7646763 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/count-down.md | unknown | 9030c120-405d-4db3-b530-44ba4d38bc45 | 0 | SemanticChunker@1.0.0 | 8eefbaa36e8470ee47cc792723536c39316f3d4835d468fbea20d567d928efb5 | ---
title: Countdown timer
language: react
tags: [components,state]
cover: sea-view-2
excerpt: Create a countdown timer that prints a message when it reaches zero, using React.
listed: true
dateModified: 2024-06-13
---
One of the benefits of React is that you can create complex components, encapsulating their logic an... | unknown | unknown | ---
title: Countdown timer
language: react
tags: [components,state]
cover: sea-view-2
excerpt: Create a countdown timer that prints a message when it reaches zero, using React.
listed: true
dateModified: 2024-06-13
---
One of the benefits of React is that you can create complex components, encapsulating their logic an... | ---
title: Countdown timer
language: react
tags: [components,state]
cover: sea-view-2
excerpt: Create a countdown timer that prints a message when it reaches zero, using React.
listed: true
dateModified: 2024-06-13
---
One of the benefits of React is that you can create complex components, encapsulating their logic an... | code_snippets | ||
d917bd04-d024-4adf-80ee-65e5cbf77815 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/count-down.md | unknown | 9030c120-405d-4db3-b530-44ba4d38bc45 | 1 | SemanticChunker@1.0.0 | c49d3b69c5b58aecf53cfd5b874a6f18a51810933744deacf74eb2cc0bce1a46 | ```jsx
const CountDown = ({ hours = 0, minutes = 0, seconds = 0 }) => {
const [paused, setPaused] = React.useState(false);
const [over, setOver] = React.useState(false);
const [[h, m, s], setTime] = React.useState([hours, minutes, seconds]);
const tick = () => {
if (paused || over) return;
if (h === 0 && m === 0... | unknown | unknown | ```jsx
const CountDown = ({ hours = 0, minutes = 0, seconds = 0 }) => {
const [paused, setPaused] = React.useState(false);
const [over, setOver] = React.useState(false);
const [[h, m, s], setTime] = React.useState([hours, minutes, seconds]);
const tick = () => {
if (paused || over) return;
if (h === 0 && m === 0... | ```jsx
const CountDown = ({ hours = 0, minutes = 0, seconds = 0 }) => {
const [paused, setPaused] = React.useState(false);
const [over, setOver] = React.useState(false);
const [[h, m, s], setTime] = React.useState([hours, minutes, seconds]);
const tick = () => {
if (paused || over) return;
if (h === 0 && m === 0... | code_snippets | ||
cba0d93e-1689-4575-a104-89987006c4bb | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/star-rating.md | unknown | 5ae98985-765f-4c84-a4c1-291877a5827d | 0 | SemanticChunker@1.0.0 | 18d0571039213f805b583802a9b51f4d7ce994dfcac107810613577d4445e93c | ---
title: Star rating component
language: react
tags: [components,children,input,state]
cover: lake-church
excerpt: Create your very own star rating component in React.
listed: true
dateModified: 2024-06-12
---
Star rating components are the de facto way of **rating items** on the web. They are simple to use and prov... | unknown | unknown | ---
title: Star rating component
language: react
tags: [components,children,input,state]
cover: lake-church
excerpt: Create your very own star rating component in React.
listed: true
dateModified: 2024-06-12
---
Star rating components are the de facto way of **rating items** on the web. They are simple to use and prov... | ---
title: Star rating component
language: react
tags: [components,children,input,state]
cover: lake-church
excerpt: Create your very own star rating component in React.
listed: true
dateModified: 2024-06-12
---
Star rating components are the de facto way of **rating items** on the web. They are simple to use and prov... | code_snippets | ||
f6475426-7955-43d1-93c4-679f2e3a9632 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/star-rating.md | unknown | 5ae98985-765f-4c84-a4c1-291877a5827d | 1 | SemanticChunker@1.0.0 | 39d4ca09b1945601b3af75263cfcc9eb64cc090fb13ceeb0b6663e0f08c4f967 | ```jsx
const Star = ({ marked, starId }) => {
return (
<span data-star-id={starId} className="star" role="button">
{marked ? '\u2605' : '\u2606'}
</span>
);
};
const StarRating = ({ value }) => {
const [rating, setRating] = React.useState(parseInt(value) || 0);
const [selection, setSelection] = React.useState(0... | unknown | unknown | ```jsx
const Star = ({ marked, starId }) => {
return (
<span data-star-id={starId} className="star" role="button">
{marked ? '\u2605' : '\u2606'}
</span>
);
};
const StarRating = ({ value }) => {
const [rating, setRating] = React.useState(parseInt(value) || 0);
const [selection, setSelection] = React.useState(0... | ```jsx
const Star = ({ marked, starId }) => {
return (
<span data-star-id={starId} className="star" role="button">
{marked ? '\u2605' : '\u2606'}
</span>
);
};
const StarRating = ({ value }) => {
const [rating, setRating] = React.useState(parseInt(value) || 0);
const [selection, setSelection] = React.useState(0... | code_snippets | ||
062a2c7f-6b40-4fc2-b0b4-087d708a3894 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/selected-option.md | unknown | 8901f182-7425-4d1d-9dd9-7e256e399722 | 1 | SemanticChunker@1.0.0 | 2b052c38c6de60b3a0d3b29f0c196f992f2dd3c061cb603ba8aa2a43c7e8ba03 | [Adding selected to an option]
## Adding selected to an option
A very common way of setting a `<select>` input's value is by adding a `selected` attribute to one of its `<option>` elements. For example:
```jsx
const Select = ({ values, callback, selected }) => {
return (
<select
disabled={disabled}
readOnly={rea... | unknown | unknown | [Adding selected to an option]
## Adding selected to an option
A very common way of setting a `<select>` input's value is by adding a `selected` attribute to one of its `<option>` elements. For example:
```jsx
const Select = ({ values, callback, selected }) => {
return (
<select
disabled={disabled}
readOnly={rea... | [Adding selected to an option]
## Adding selected to an option
A very common way of setting a `<select>` input's value is by adding a `selected` attribute to one of its `<option>` elements. For example:
```jsx
const Select = ({ values, callback, selected }) => {
return (
<select
disabled={disabled}
readOnly={rea... | code_snippets | ||
1739a05d-fe39-4cf5-b187-a672d26f7bcb | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/selected-option.md | unknown | 8901f182-7425-4d1d-9dd9-7e256e399722 | 0 | SemanticChunker@1.0.0 | 7e143300b3805fc1064046aa534abe7117931f175b46cc8d429a518b6db2127b | ---
title: How can I set the value of a select input in React?
shortTitle: Select input value
language: react
tags: [components,input]
cover: two-doors
excerpt: Learn of all the different ways to set the value of a selected input in React with this quick guide.
listed: true
dateModified: 2024-06-22
--- | unknown | unknown | ---
title: How can I set the value of a select input in React?
shortTitle: Select input value
language: react
tags: [components,input]
cover: two-doors
excerpt: Learn of all the different ways to set the value of a selected input in React with this quick guide.
listed: true
dateModified: 2024-06-22
--- | ---
title: How can I set the value of a select input in React?
shortTitle: Select input value
language: react
tags: [components,input]
cover: two-doors
excerpt: Learn of all the different ways to set the value of a selected input in React with this quick guide.
listed: true
dateModified: 2024-06-22
--- | code_snippets | ||
47b2417f-f0f2-4f30-8021-49011a52765b | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/selected-option.md | unknown | 8901f182-7425-4d1d-9dd9-7e256e399722 | 3 | SemanticChunker@1.0.0 | 612e3be987dc433fbd287795d062cc14564e75dc01ad7e6bfa5c14fa1a41b8d1 | [Adding selected to an option > Making a reusable component]
## Making a reusable component
Putting everything we've seen together, we can create an uncontrolled `<select>` component that uses a callback function to pass its value to the parent component.
To make its API as usable as possible, we'll use the `selecte... | unknown | unknown | [Adding selected to an option > Making a reusable component]
## Making a reusable component
Putting everything we've seen together, we can create an uncontrolled `<select>` component that uses a callback function to pass its value to the parent component.
To make its API as usable as possible, we'll use the `selecte... | [Adding selected to an option > Making a reusable component]
## Making a reusable component
Putting everything we've seen together, we can create an uncontrolled `<select>` component that uses a callback function to pass its value to the parent component.
To make its API as usable as possible, we'll use the `selecte... | code_snippets | ||
530b65b9-032b-49ba-b438-94e8bb101d11 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/selected-option.md | unknown | 8901f182-7425-4d1d-9dd9-7e256e399722 | 2 | SemanticChunker@1.0.0 | 55020d5d510f7832085a5a2627e4056a9720156f0f72d402d0c28bdffef47ec6 | [Adding selected to an option > Setting value for the select]
## Setting value for the select
While this approach closely resembles HTML and feels intuitive, there is an **easier way** to do the same thing. [React](https://reactjs.org/docs/forms.html#the-select-tag) provides us with a shared API between `<input type=... | unknown | unknown | [Adding selected to an option > Setting value for the select]
## Setting value for the select
While this approach closely resembles HTML and feels intuitive, there is an **easier way** to do the same thing. [React](https://reactjs.org/docs/forms.html#the-select-tag) provides us with a shared API between `<input type=... | [Adding selected to an option > Setting value for the select]
## Setting value for the select
While this approach closely resembles HTML and feels intuitive, there is an **easier way** to do the same thing. [React](https://reactjs.org/docs/forms.html#the-select-tag) provides us with a shared API between `<input type=... | code_snippets | ||
04a18d8b-e6c5-40db-be8c-a3221da446bf | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 1 | SemanticChunker@1.0.0 | 2f5d442debf76e6c1cae83b2b5cba2555ca82629252da6a0a6940e36ccfc3bda | [Rendering introduction]
## Rendering introduction
**Rendering** is the process during which React moves down the component tree starting at the root, looking for all the components flagged for update, asking them to describe their desired UI structure based on the current combination of `props` and `state`. For each... | unknown | unknown | [Rendering introduction]
## Rendering introduction
**Rendering** is the process during which React moves down the component tree starting at the root, looking for all the components flagged for update, asking them to describe their desired UI structure based on the current combination of `props` and `state`. For each... | [Rendering introduction]
## Rendering introduction
**Rendering** is the process during which React moves down the component tree starting at the root, looking for all the components flagged for update, asking them to describe their desired UI structure based on the current combination of `props` and `state`. For each... | code_snippets | ||
08d27bd9-cc57-4505-90d9-25cdc04464af | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 4 | SemanticChunker@1.0.0 | 40f7d185de0a7f638d7f7d89c08df652ef231d5bda0bbb753f09176ef942e942 | [Rendering introduction > Rendering behavior]
## Rendering behavior
React's default behavior is to **recursively render all child components inside of it when a parent component is rendered**. This means that it does not care if a component's `props` have changed - as long as the parent component rendered, its childr... | unknown | unknown | [Rendering introduction > Rendering behavior]
## Rendering behavior
React's default behavior is to **recursively render all child components inside of it when a parent component is rendered**. This means that it does not care if a component's `props` have changed - as long as the parent component rendered, its childr... | [Rendering introduction > Rendering behavior]
## Rendering behavior
React's default behavior is to **recursively render all child components inside of it when a parent component is rendered**. This means that it does not care if a component's `props` have changed - as long as the parent component rendered, its childr... | code_snippets | ||
49f49458-0800-4c55-bb2f-7fe27396544d | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 0 | SemanticChunker@1.0.0 | 4453701e6c31e3292123b143af7306e455ee53f47680f01914f323cfdf4ffd2c | ---
title: React rendering
language: react
tags: [render]
cover: comic-glasses
excerpt: Take a deep dive into React's rendering process to understand the basics, performance optimization and the role of state management in it.
listed: true
dateModified: 2024-06-04
--- | unknown | unknown | ---
title: React rendering
language: react
tags: [render]
cover: comic-glasses
excerpt: Take a deep dive into React's rendering process to understand the basics, performance optimization and the role of state management in it.
listed: true
dateModified: 2024-06-04
--- | ---
title: React rendering
language: react
tags: [render]
cover: comic-glasses
excerpt: Take a deep dive into React's rendering process to understand the basics, performance optimization and the role of state management in it.
listed: true
dateModified: 2024-06-04
--- | code_snippets | ||
4c520812-0cdc-452e-bcdb-55a5c96df1be | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 5 | SemanticChunker@1.0.0 | 1daec2424aa7506be49f37f98d29f5af56d4244eb841cf343d38e10e666da1ec | [Rendering introduction > Optimization opportunities]
## Optimization opportunities
As we've seen already, **rendering** is React's way of knowing if it needs to make changes in the DOM, but there are certain cases where work and calculations performed during the **render phase** can be a wasted effort. After all, if... | unknown | unknown | [Rendering introduction > Optimization opportunities]
## Optimization opportunities
As we've seen already, **rendering** is React's way of knowing if it needs to make changes in the DOM, but there are certain cases where work and calculations performed during the **render phase** can be a wasted effort. After all, if... | [Rendering introduction > Optimization opportunities]
## Optimization opportunities
As we've seen already, **rendering** is React's way of knowing if it needs to make changes in the DOM, but there are certain cases where work and calculations performed during the **render phase** can be a wasted effort. After all, if... | code_snippets | ||
69f4586b-a994-4626-8d98-74d74ee0c957 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 11 | SemanticChunker@1.0.0 | f3b3e5ff4db43ddd5d2879f5996c927f8df4e321497c2cbc43256af3cf4f0636 | [Rendering introduction > React-Redux]
## React-Redux
React-Redux provides bindings for **Redux**, a state container for JavaScript applications, and works a little differently from React's Context API. One of the key differences is that React-Redux only re-renders components that need to render, due to the fact that... | unknown | unknown | [Rendering introduction > React-Redux]
## React-Redux
React-Redux provides bindings for **Redux**, a state container for JavaScript applications, and works a little differently from React's Context API. One of the key differences is that React-Redux only re-renders components that need to render, due to the fact that... | [Rendering introduction > React-Redux]
## React-Redux
React-Redux provides bindings for **Redux**, a state container for JavaScript applications, and works a little differently from React's Context API. One of the key differences is that React-Redux only re-renders components that need to render, due to the fact that... | code_snippets | ||
7ec0095b-7839-432d-8472-a3a3cdffabf3 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 6 | SemanticChunker@1.0.0 | 6e05c5cdc733eb68b25467547747195c624550f9daec064cbe0b95b3482bf409 | [Rendering introduction > Optimization techniques]
## Optimization techniques
React offers a handful of APIs that allow us to optimize the rendering process:
- `shouldComponentUpdate` (class components): Lifecycle method, called before rendering, returning a boolean (`false` to skip rendering, `true` to proceed as u... | unknown | unknown | [Rendering introduction > Optimization techniques]
## Optimization techniques
React offers a handful of APIs that allow us to optimize the rendering process:
- `shouldComponentUpdate` (class components): Lifecycle method, called before rendering, returning a boolean (`false` to skip rendering, `true` to proceed as u... | [Rendering introduction > Optimization techniques]
## Optimization techniques
React offers a handful of APIs that allow us to optimize the rendering process:
- `shouldComponentUpdate` (class components): Lifecycle method, called before rendering, returning a boolean (`false` to skip rendering, `true` to proceed as u... | code_snippets | ||
8b076c42-7878-4abc-b509-268e7e097d4f | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 2 | SemanticChunker@1.0.0 | 3862226f68ccb926ee02b2d04544e9e04cbad8f647d41857f2c7ba1a67a1037c | [Rendering introduction > Render and commit phases]
## Render and commit phases
Conceptually, this work is divided into two phases:
- **Render phase**: rendering components, calculating changes
- **Commit phase**: applying the changes to the DOM
After the **commit phase** is complete, React will run `componentDidMo... | unknown | unknown | [Rendering introduction > Render and commit phases]
## Render and commit phases
Conceptually, this work is divided into two phases:
- **Render phase**: rendering components, calculating changes
- **Commit phase**: applying the changes to the DOM
After the **commit phase** is complete, React will run `componentDidMo... | [Rendering introduction > Render and commit phases]
## Render and commit phases
Conceptually, this work is divided into two phases:
- **Render phase**: rendering components, calculating changes
- **Commit phase**: applying the changes to the DOM
After the **commit phase** is complete, React will run `componentDidMo... | code_snippets | ||
8b0c8282-565d-4906-9463-894f9ab6b067 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 7 | SemanticChunker@1.0.0 | 07f4394489489d3f6b5d5c181f1fee8fb6400f66c7f151e17e05c7fda2b18f60 | [Rendering introduction > Reference memoization]
## Reference memoization
Passing new references as `props` to a child component doesn't usually matter, as it will re-render regardless when the parent changes. However, if you are trying to optimize a child component's rendering by checking if its `props` have changed... | unknown | unknown | [Rendering introduction > Reference memoization]
## Reference memoization
Passing new references as `props` to a child component doesn't usually matter, as it will re-render regardless when the parent changes. However, if you are trying to optimize a child component's rendering by checking if its `props` have changed... | [Rendering introduction > Reference memoization]
## Reference memoization
Passing new references as `props` to a child component doesn't usually matter, as it will re-render regardless when the parent changes. However, if you are trying to optimize a child component's rendering by checking if its `props` have changed... | code_snippets | ||
9d0bad18-4848-4561-b670-57de7353c1e7 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 10 | SemanticChunker@1.0.0 | f6bc68dcf18d52929fb28ae8f1979b8fc875985c67a3fe56b8890a795f15d1da | [Rendering introduction > Context optimization]
## Context optimization
By default, any update to a parent component that renders a context `Provider` will cause all of the child components to re-render regardless of changes in the context, due to React's rendering process. To avoid re-rendering child components when... | unknown | unknown | [Rendering introduction > Context optimization]
## Context optimization
By default, any update to a parent component that renders a context `Provider` will cause all of the child components to re-render regardless of changes in the context, due to React's rendering process. To avoid re-rendering child components when... | [Rendering introduction > Context optimization]
## Context optimization
By default, any update to a parent component that renders a context `Provider` will cause all of the child components to re-render regardless of changes in the context, due to React's rendering process. To avoid re-rendering child components when... | code_snippets | ||
c482a00c-9de0-44b0-9be7-a136cabd2c4f | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 3 | SemanticChunker@1.0.0 | abd0da458f887803d131aa6ffd3c928e836decb0dcfa4cfc5c8743752dbbd506 | [Rendering introduction > Rendering reasons]
## Rendering reasons
After the initial render has completed, there are a few different things that will cause a re-render:
- `this.setState()` (class components)
- `this.forceUpdate()` (class components)
- `useState()` setters (function components)
- `useReducer()` dispat... | unknown | unknown | [Rendering introduction > Rendering reasons]
## Rendering reasons
After the initial render has completed, there are a few different things that will cause a re-render:
- `this.setState()` (class components)
- `this.forceUpdate()` (class components)
- `useState()` setters (function components)
- `useReducer()` dispat... | [Rendering introduction > Rendering reasons]
## Rendering reasons
After the initial render has completed, there are a few different things that will cause a re-render:
- `this.setState()` (class components)
- `this.forceUpdate()` (class components)
- `useState()` setters (function components)
- `useReducer()` dispat... | code_snippets | ||
e963546e-ce46-44c3-a168-eb61cf53c886 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 8 | SemanticChunker@1.0.0 | 6151a7b95a25a7cbf542daefeb31130ec039463658f967d414c863039a9e0ef0 | [Rendering introduction > Performance measurement]
## Performance measurement
**React Developer Tools** provide a handy **Profiler** tab that allows you to visualize and explore the rendering process of your React applications. Under this tab, you will find a settings icon which will allow you to _Highlight updates w... | unknown | unknown | [Rendering introduction > Performance measurement]
## Performance measurement
**React Developer Tools** provide a handy **Profiler** tab that allows you to visualize and explore the rendering process of your React applications. Under this tab, you will find a settings icon which will allow you to _Highlight updates w... | [Rendering introduction > Performance measurement]
## Performance measurement
**React Developer Tools** provide a handy **Profiler** tab that allows you to visualize and explore the rendering process of your React applications. Under this tab, you will find a settings icon which will allow you to _Highlight updates w... | code_snippets | ||
e9fbeabf-06f7-4159-8ba3-96518ed089b3 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 9 | SemanticChunker@1.0.0 | 630aa8776d154911360333cafb27757e57d1ef00e51cbc1c2c513a6757ac7b7a | [Rendering introduction > Context API]
## Context API
React's **Context API** provides a way to pass data through the component tree without using `props`, but should not be used for state management as it requires manual updating. Any component inside a context's `Provider` can access the data in the context instanc... | unknown | unknown | [Rendering introduction > Context API]
## Context API
React's **Context API** provides a way to pass data through the component tree without using `props`, but should not be used for state management as it requires manual updating. Any component inside a context's `Provider` can access the data in the context instanc... | [Rendering introduction > Context API]
## Context API
React's **Context API** provides a way to pass data through the component tree without using `props`, but should not be used for state management as it requires manual updating. Any component inside a context's `Provider` can access the data in the context instanc... | code_snippets | ||
f3cf9230-3f49-4c7a-8413-9bcb8635b6b9 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/rendering.md | unknown | cc792039-8db2-4d9a-9943-9522fd7324ea | 12 | SemanticChunker@1.0.0 | 29fe018bcb08dd9c59d4d5800f5f642759fb571dd4d2b4586b6cb60fb8e8fdd7 | [Rendering introduction > React-Redux optimization]
## React-Redux optimization
React-Redux provides two ways of connecting to its store, performing the necessary work and returning the combined `props`:
- `connect` (any component): Higher-order component (HOC) that wraps any given component
- `useSelector` (functio... | unknown | unknown | [Rendering introduction > React-Redux optimization]
## React-Redux optimization
React-Redux provides two ways of connecting to its store, performing the necessary work and returning the combined `props`:
- `connect` (any component): Higher-order component (HOC) that wraps any given component
- `useSelector` (functio... | [Rendering introduction > React-Redux optimization]
## React-Redux optimization
React-Redux provides two ways of connecting to its store, performing the necessary work and returning the combined `props`:
- `connect` (any component): Higher-order component (HOC) that wraps any given component
- `useSelector` (functio... | code_snippets | ||
540b2d3c-4831-455b-a79b-b49875ae48ef | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/ripple-button.md | unknown | 8385439e-24a3-4c33-8565-d62b3e12b204 | 2 | SemanticChunker@1.0.0 | 5894a8cf79f82324382da065c15457c350524872e1cd56603a2141d1299c9cd6 | [Anatomy of the button > The ripple animation]
## The ripple animation
For the ripple effect animation, we'll use the `transform` property to **scale** the ripple circle and the `opacity` property to **fade** it out. The `animation` property is used to define the animation duration and easing function. We'll also hav... | unknown | unknown | [Anatomy of the button > The ripple animation]
## The ripple animation
For the ripple effect animation, we'll use the `transform` property to **scale** the ripple circle and the `opacity` property to **fade** it out. The `animation` property is used to define the animation duration and easing function. We'll also hav... | [Anatomy of the button > The ripple animation]
## The ripple animation
For the ripple effect animation, we'll use the `transform` property to **scale** the ripple circle and the `opacity` property to **fade** it out. The `animation` property is used to define the animation duration and easing function. We'll also hav... | code_snippets | ||
95eeb961-94db-42b0-9743-993b2be4d4e3 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/ripple-button.md | unknown | 8385439e-24a3-4c33-8565-d62b3e12b204 | 1 | SemanticChunker@1.0.0 | a62e8c22c996c800f3a0bab7402f2d84e60d64b20fdce74ea6d89868452822b7 | [Anatomy of the button]
## Anatomy of the button
The button consists of **two main parts**: the ripple circle and the button content. In this implementation, the ripple circle is a `span` element with the `ripple` class. The button content is a `span` element with the `content` class. The ripple circle is **positione... | unknown | unknown | [Anatomy of the button]
## Anatomy of the button
The button consists of **two main parts**: the ripple circle and the button content. In this implementation, the ripple circle is a `span` element with the `ripple` class. The button content is a `span` element with the `content` class. The ripple circle is **positione... | [Anatomy of the button]
## Anatomy of the button
The button consists of **two main parts**: the ripple circle and the button content. In this implementation, the ripple circle is a `span` element with the `ripple` class. The button content is a `span` element with the `content` class. The ripple circle is **positione... | code_snippets | ||
976378c1-0553-4dda-8b62-33104549de90 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/ripple-button.md | unknown | 8385439e-24a3-4c33-8565-d62b3e12b204 | 3 | SemanticChunker@1.0.0 | a2c4aeb08c356132c67433ee3cf2407f1a2b55c30caa1400c101be8d6b8beafd | [Anatomy of the button > Positioning the ripple circle]
## Positioning the ripple circle
The ripple circle is positioned absolutely inside the button. The `left` and `top` properties are set to the **pointer's coordinates** when the button is clicked. This way, the ripple circle appears to originate from the pointer'... | unknown | unknown | [Anatomy of the button > Positioning the ripple circle]
## Positioning the ripple circle
The ripple circle is positioned absolutely inside the button. The `left` and `top` properties are set to the **pointer's coordinates** when the button is clicked. This way, the ripple circle appears to originate from the pointer'... | [Anatomy of the button > Positioning the ripple circle]
## Positioning the ripple circle
The ripple circle is positioned absolutely inside the button. The `left` and `top` properties are set to the **pointer's coordinates** when the button is clicked. This way, the ripple circle appears to originate from the pointer'... | code_snippets | ||
abda9d24-c8d2-4fbb-8c80-0ca745039241 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/ripple-button.md | unknown | 8385439e-24a3-4c33-8565-d62b3e12b204 | 0 | SemanticChunker@1.0.0 | a56318ffe46310e830edf7feab0d52296ff119b5eec94a5f2c5da8cd5769bba1 | ---
title: Button with ripple effect
language: react
tags: [components,state,effect]
cover: mountain-lake-cottage
excerpt: Learn how to create an animated button with a ripple effect when clicked.
listed: true
dateModified: 2024-06-20
---
Ripple effects on click were popularized by the **Material Design** guidelines. ... | unknown | unknown | ---
title: Button with ripple effect
language: react
tags: [components,state,effect]
cover: mountain-lake-cottage
excerpt: Learn how to create an animated button with a ripple effect when clicked.
listed: true
dateModified: 2024-06-20
---
Ripple effects on click were popularized by the **Material Design** guidelines. ... | ---
title: Button with ripple effect
language: react
tags: [components,state,effect]
cover: mountain-lake-cottage
excerpt: Learn how to create an animated button with a ripple effect when clicked.
listed: true
dateModified: 2024-06-20
---
Ripple effects on click were popularized by the **Material Design** guidelines. ... | code_snippets | ||
e5f0134b-41be-40df-8017-995c296c6955 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/ripple-button.md | unknown | 8385439e-24a3-4c33-8565-d62b3e12b204 | 4 | SemanticChunker@1.0.0 | fa2eaef7b8e61e572355f0f09a93497adbc0b26ea04a60c8064fd4a4276740b0 | [Anatomy of the button > Positioning the ripple circle]
```jsx
const RippleButton = ({ children, onClick }) => {
const [coords, setCoords] = React.useState({ x: -1, y: -1 });
const [isRippling, setIsRippling] = React.useState(false);
React.useEffect(() => {
if (coords.x !== -1 && coords.y !== -1) {
setIsRippling... | unknown | unknown | [Anatomy of the button > Positioning the ripple circle]
```jsx
const RippleButton = ({ children, onClick }) => {
const [coords, setCoords] = React.useState({ x: -1, y: -1 });
const [isRippling, setIsRippling] = React.useState(false);
React.useEffect(() => {
if (coords.x !== -1 && coords.y !== -1) {
setIsRippling... | [Anatomy of the button > Positioning the ripple circle]
```jsx
const RippleButton = ({ children, onClick }) => {
const [coords, setCoords] = React.useState({ x: -1, y: -1 });
const [isRippling, setIsRippling] = React.useState(false);
React.useEffect(() => {
if (coords.x !== -1 && coords.y !== -1) {
setIsRippling... | code_snippets | ||
9162556a-208a-4d5b-b6e8-74c4bd3457eb | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tag-input.md | unknown | 1a9a61f6-74ef-4dea-b43a-7be2aef47914 | 1 | SemanticChunker@1.0.0 | 8517146cfdaa247219e9cda24772d36e07e14c41055c2a5d7e50f1f2ea227b98 | ```css
.tag-input {
display: flex;
flex-wrap: wrap;
min-height: 48px;
padding: 0 8px;
border: 1px solid #d6d8da;
border-radius: 6px;
}
.tag-input input {
flex: 1;
border: none;
height: 46px;
font-size: 14px;
padding: 4px 0 0;
}
.tag-input input:focus {
outline: transparent;
}
.tags {
display: flex;
fle... | unknown | unknown | ```css
.tag-input {
display: flex;
flex-wrap: wrap;
min-height: 48px;
padding: 0 8px;
border: 1px solid #d6d8da;
border-radius: 6px;
}
.tag-input input {
flex: 1;
border: none;
height: 46px;
font-size: 14px;
padding: 4px 0 0;
}
.tag-input input:focus {
outline: transparent;
}
.tags {
display: flex;
fle... | ```css
.tag-input {
display: flex;
flex-wrap: wrap;
min-height: 48px;
padding: 0 8px;
border: 1px solid #d6d8da;
border-radius: 6px;
}
.tag-input input {
flex: 1;
border: none;
height: 46px;
font-size: 14px;
padding: 4px 0 0;
}
.tag-input input:focus {
outline: transparent;
}
.tags {
display: flex;
fle... | code_snippets | ||
a66f721f-76e6-4026-99a2-be1aa23e60db | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tag-input.md | unknown | 1a9a61f6-74ef-4dea-b43a-7be2aef47914 | 0 | SemanticChunker@1.0.0 | 34f0171676b9f5c3d8c44a89deefb3dd938e816a73d8f9e17c8459cc65f4af44 | ---
title: Tag input field
language: react
tags: [components,input,state]
cover: interior-4
excerpt: Create a custom input field with selectable tags, using React.
listed: true
dateModified: 2024-06-15
---
Tag input fields have become a common feature in modern web applications. They allow users to add **multiple tags... | unknown | unknown | ---
title: Tag input field
language: react
tags: [components,input,state]
cover: interior-4
excerpt: Create a custom input field with selectable tags, using React.
listed: true
dateModified: 2024-06-15
---
Tag input fields have become a common feature in modern web applications. They allow users to add **multiple tags... | ---
title: Tag input field
language: react
tags: [components,input,state]
cover: interior-4
excerpt: Create a custom input field with selectable tags, using React.
listed: true
dateModified: 2024-06-15
---
Tag input fields have become a common feature in modern web applications. They allow users to add **multiple tags... | code_snippets | ||
3df84edb-c50b-4ce4-a529-31cff689f17a | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 2 | SemanticChunker@1.0.0 | e7a802164295c46f0f5d71499a884498211ced35c657aaf9ca872ce68dd26f4f | [Identifying the problems]
## Identifying the problems
While the code in the example is not that complicated right now, complexity can increase very fast as more action types need to be handled by our application. This is due to the fact that each `action.type`'s logic is nested inside the `reducer` function, thus ad... | unknown | unknown | [Identifying the problems]
## Identifying the problems
While the code in the example is not that complicated right now, complexity can increase very fast as more action types need to be handled by our application. This is due to the fact that each `action.type`'s logic is nested inside the `reducer` function, thus ad... | [Identifying the problems]
## Identifying the problems
While the code in the example is not that complicated right now, complexity can increase very fast as more action types need to be handled by our application. This is due to the fact that each `action.type`'s logic is nested inside the `reducer` function, thus ad... | code_snippets | ||
6e2c963c-0fd0-4e53-9203-9837e6ff08ea | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 5 | SemanticChunker@1.0.0 | 37f7b934bb4fd84f233d61b1e646259d1e3e17f2810ea68699198064c3a8efc5 | [Identifying the problems > Extract nested logic]
## Extract nested logic
Finally, we are ready to implement the most drastic fix which the previous two changes will help us facilitate - extracting nested logic. The first issue we identified was that each `action.type`'s logic was nested inside the `reducer` function... | unknown | unknown | [Identifying the problems > Extract nested logic]
## Extract nested logic
Finally, we are ready to implement the most drastic fix which the previous two changes will help us facilitate - extracting nested logic. The first issue we identified was that each `action.type`'s logic was nested inside the `reducer` function... | [Identifying the problems > Extract nested logic]
## Extract nested logic
Finally, we are ready to implement the most drastic fix which the previous two changes will help us facilitate - extracting nested logic. The first issue we identified was that each `action.type`'s logic was nested inside the `reducer` function... | code_snippets | ||
81133e4c-c7d7-4c83-ba68-79ffee4fd8b7 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 4 | SemanticChunker@1.0.0 | 85d5b0c23e0f901f7b9d9efbce49297640648e7a9e5600de9671070f24d0b9a1 | [Identifying the problems > Create a common action structure]
## Create a common action structure
Our `action` objects aren't consistent in terms of structure with the exception of sharing a `type` key which we use to identify each action. If we hope to reduce mental strain and minimize headaches, we should make thes... | unknown | unknown | [Identifying the problems > Create a common action structure]
## Create a common action structure
Our `action` objects aren't consistent in terms of structure with the exception of sharing a `type` key which we use to identify each action. If we hope to reduce mental strain and minimize headaches, we should make thes... | [Identifying the problems > Create a common action structure]
## Create a common action structure
Our `action` objects aren't consistent in terms of structure with the exception of sharing a `type` key which we use to identify each action. If we hope to reduce mental strain and minimize headaches, we should make thes... | code_snippets | ||
9af3e301-6e8a-471a-bd8a-72d4cc8ef664 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 6 | SemanticChunker@1.0.0 | 2ae1af6dd63d82a066d1d9e8b265402fd2a244cca8ab2b51a600555f87284078 | [Identifying the problems > Putting it all together]
## Putting it all together
Having implemented the above changes, let's take a look at what our final code looks like:
```js
const initialState = {
id: null,
name: '',
properties: {},
};
const ACTION_TYPES = {
CREATE_ID: 'createID',
SET_NAME: 'setName',
ADD_... | unknown | unknown | [Identifying the problems > Putting it all together]
## Putting it all together
Having implemented the above changes, let's take a look at what our final code looks like:
```js
const initialState = {
id: null,
name: '',
properties: {},
};
const ACTION_TYPES = {
CREATE_ID: 'createID',
SET_NAME: 'setName',
ADD_... | [Identifying the problems > Putting it all together]
## Putting it all together
Having implemented the above changes, let's take a look at what our final code looks like:
```js
const initialState = {
id: null,
name: '',
properties: {},
};
const ACTION_TYPES = {
CREATE_ID: 'createID',
SET_NAME: 'setName',
ADD_... | code_snippets | ||
bd2248b6-6f25-4f4a-8934-190a4ff29462 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 1 | SemanticChunker@1.0.0 | ea2aa0ef9c63d4c08f163794a1b0d2773134a731718a73582dcfc3dab17eb837 | ```js
const initialState = {
id: null,
name: '',
properties: {},
};
const generateID = () => Math.floor(Math.random() * 1000);
const reducer = (state = initialState, action) => {
switch (action.type) {
case 'createID':
return {
...state,
id: generateID(),
};
case 'setName':
return {
...state,
name: actio... | unknown | unknown | ```js
const initialState = {
id: null,
name: '',
properties: {},
};
const generateID = () => Math.floor(Math.random() * 1000);
const reducer = (state = initialState, action) => {
switch (action.type) {
case 'createID':
return {
...state,
id: generateID(),
};
case 'setName':
return {
...state,
name: actio... | ```js
const initialState = {
id: null,
name: '',
properties: {},
};
const generateID = () => Math.floor(Math.random() * 1000);
const reducer = (state = initialState, action) => {
switch (action.type) {
case 'createID':
return {
...state,
id: generateID(),
};
case 'setName':
return {
...state,
name: actio... | code_snippets | ||
d0052fab-be78-4ccb-945c-a25f4f120a4e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 0 | SemanticChunker@1.0.0 | f96875d62eadd3471bb4e0116263e2ae6cb90c1211ef730dfb87b8d2eed93ddc | ---
title: Writing readable reducers in Redux
shortTitle: Readable reducer tips
language: react
tags: [logic]
cover: beach-from-above
excerpt: When working with stateful code, you can run into issues realted to complexity and readability. Oftentimes, they are easily fixable.
listed: true
dateModified: 2021-06-12
---
_... | unknown | unknown | ---
title: Writing readable reducers in Redux
shortTitle: Readable reducer tips
language: react
tags: [logic]
cover: beach-from-above
excerpt: When working with stateful code, you can run into issues realted to complexity and readability. Oftentimes, they are easily fixable.
listed: true
dateModified: 2021-06-12
---
_... | ---
title: Writing readable reducers in Redux
shortTitle: Readable reducer tips
language: react
tags: [logic]
cover: beach-from-above
excerpt: When working with stateful code, you can run into issues realted to complexity and readability. Oftentimes, they are easily fixable.
listed: true
dateModified: 2021-06-12
---
_... | code_snippets | ||
e0e34725-7586-4857-b016-e93a479416e8 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/redux-readable-reducers.md | unknown | 68bda808-0866-4b4f-ab52-6f55f40b30e8 | 3 | SemanticChunker@1.0.0 | a85975cac298e04b818743194f9ef674e1f45b9e618117b5ac8fb2bbe464ab5c | [Identifying the problems > Define action types]
## Define action types
Starting with removing the hardcoded strings for each of the `action.type` values, we can make the code more maintainable and easier to read by extracting them to an object:
```js
const ACTION_TYPES = {
CREATE_ID: 'createID',
SET_NAME: 'setNam... | unknown | unknown | [Identifying the problems > Define action types]
## Define action types
Starting with removing the hardcoded strings for each of the `action.type` values, we can make the code more maintainable and easier to read by extracting them to an object:
```js
const ACTION_TYPES = {
CREATE_ID: 'createID',
SET_NAME: 'setNam... | [Identifying the problems > Define action types]
## Define action types
Starting with removing the hardcoded strings for each of the `action.type` values, we can make the code more maintainable and easier to read by extracting them to an object:
```js
const ACTION_TYPES = {
CREATE_ID: 'createID',
SET_NAME: 'setNam... | code_snippets | ||
dd57a0b2-d6fe-412f-9f00-d6957efe5c84 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-portals.md | unknown | aaa6b873-c097-4b01-bcce-5ed0c29503a9 | 0 | SemanticChunker@1.0.0 | 08a991ba26b3e04949b313b47e42703068903edc838b5dcb763362c00df0e09d | ---
title: Testing React portals
shortTitle: Portal testing
language: react
tags: [testing]
cover: portal-timelapse
excerpt: Testing React components that use portals can be difficult until you understand what you really need to be testing.
listed: true
dateModified: 2022-03-13
---
Testing React components can get pre... | unknown | unknown | ---
title: Testing React portals
shortTitle: Portal testing
language: react
tags: [testing]
cover: portal-timelapse
excerpt: Testing React components that use portals can be difficult until you understand what you really need to be testing.
listed: true
dateModified: 2022-03-13
---
Testing React components can get pre... | ---
title: Testing React portals
shortTitle: Portal testing
language: react
tags: [testing]
cover: portal-timelapse
excerpt: Testing React components that use portals can be difficult until you understand what you really need to be testing.
listed: true
dateModified: 2022-03-13
---
Testing React components can get pre... | code_snippets | ||
0c51bc1f-9447-42d2-8db8-ed77846e4701 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/proptypes-objectof-vs-shape.md | unknown | fd3b1b40-00c0-4881-8323-f2c57fd05588 | 2 | SemanticChunker@1.0.0 | 3c70c75c9f7314622123eabd57d67662773a77d2516f49ca7cad416188c1c261 | [PropTypes.shape() > PropTypes.objectOf()]
## PropTypes.objectOf()
The `PropTypes.objectOf()` validator is used when describing an object whose **keys might not be known ahead of time**, and often represent the same type. For example:
```js
import PropTypes from 'prop-types';
// Expected prop object - dynamic keys ... | unknown | unknown | [PropTypes.shape() > PropTypes.objectOf()]
## PropTypes.objectOf()
The `PropTypes.objectOf()` validator is used when describing an object whose **keys might not be known ahead of time**, and often represent the same type. For example:
```js
import PropTypes from 'prop-types';
// Expected prop object - dynamic keys ... | [PropTypes.shape() > PropTypes.objectOf()]
## PropTypes.objectOf()
The `PropTypes.objectOf()` validator is used when describing an object whose **keys might not be known ahead of time**, and often represent the same type. For example:
```js
import PropTypes from 'prop-types';
// Expected prop object - dynamic keys ... | code_snippets | ||
11ee778e-7e40-4593-b1cb-15a40dd5f5ca | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/proptypes-objectof-vs-shape.md | unknown | fd3b1b40-00c0-4881-8323-f2c57fd05588 | 0 | SemanticChunker@1.0.0 | a3e2d6cab8b0ff54edcdabc03e3f9494dbdac4490cfbd0d911e1f15998381120 | ---
title: React PropTypes - objectOf vs shape
shortTitle: PropTypes - objectOf vs shape
language: react
tags: [components,proptypes]
cover: shapes
excerpt: Learn the differences between `PropTypes.objectOf()` and `PropTypes.shape()` and where to use each one with this quick guide.
listed: true
dateModified: 2021-06-12... | unknown | unknown | ---
title: React PropTypes - objectOf vs shape
shortTitle: PropTypes - objectOf vs shape
language: react
tags: [components,proptypes]
cover: shapes
excerpt: Learn the differences between `PropTypes.objectOf()` and `PropTypes.shape()` and where to use each one with this quick guide.
listed: true
dateModified: 2021-06-12... | ---
title: React PropTypes - objectOf vs shape
shortTitle: PropTypes - objectOf vs shape
language: react
tags: [components,proptypes]
cover: shapes
excerpt: Learn the differences between `PropTypes.objectOf()` and `PropTypes.shape()` and where to use each one with this quick guide.
listed: true
dateModified: 2021-06-12... | code_snippets | ||
165a4d16-873b-47d2-b6c4-1e2d8c8d9dc5 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/proptypes-objectof-vs-shape.md | unknown | fd3b1b40-00c0-4881-8323-f2c57fd05588 | 1 | SemanticChunker@1.0.0 | 9cbb9ea9aaa405ff1d4eaf9a67882c94610cc4a5270dffc0706baaa1ca18d211 | [PropTypes.shape()]
## PropTypes.shape()
The `PropTypes.shape()` validator can be used when describing an object whose **keys are known ahead of time**, and may represent different types. For example:
```js
import PropTypes from 'prop-types';
// Expected prop object - keys known ahead of time
const myProp = {
name... | unknown | unknown | [PropTypes.shape()]
## PropTypes.shape()
The `PropTypes.shape()` validator can be used when describing an object whose **keys are known ahead of time**, and may represent different types. For example:
```js
import PropTypes from 'prop-types';
// Expected prop object - keys known ahead of time
const myProp = {
name... | [PropTypes.shape()]
## PropTypes.shape()
The `PropTypes.shape()` validator can be used when describing an object whose **keys are known ahead of time**, and may represent different types. For example:
```js
import PropTypes from 'prop-types';
// Expected prop object - keys known ahead of time
const myProp = {
name... | code_snippets | ||
4c7e4b1d-c6d2-481b-a1d3-dfcd20461f31 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/persist-state-to-storage.md | unknown | bf8e7754-4be9-42e9-a046-ac6fda4bc5f2 | 0 | SemanticChunker@1.0.0 | f701798d232b0c605b7a0c925f1baf8f7ff94b2fb89963f85ef4b175c9a14446 | ---
title: Persisting state in React
shortTitle: State persistence hooks
language: react
tags: [hooks,state,effect]
cover: red-berries
excerpt: Learn how to persist state in React using hooks and `localStorage` or `sessionStorage`.
listed: true
dateModified: 2024-07-01
---
Sometimes, you might want to **persist the st... | unknown | unknown | ---
title: Persisting state in React
shortTitle: State persistence hooks
language: react
tags: [hooks,state,effect]
cover: red-berries
excerpt: Learn how to persist state in React using hooks and `localStorage` or `sessionStorage`.
listed: true
dateModified: 2024-07-01
---
Sometimes, you might want to **persist the st... | ---
title: Persisting state in React
shortTitle: State persistence hooks
language: react
tags: [hooks,state,effect]
cover: red-berries
excerpt: Learn how to persist state in React using hooks and `localStorage` or `sessionStorage`.
listed: true
dateModified: 2024-07-01
---
Sometimes, you might want to **persist the st... | code_snippets | ||
c563a1b3-eeba-40f0-b499-b2ca32ab9a13 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/persist-state-to-storage.md | unknown | bf8e7754-4be9-42e9-a046-ac6fda4bc5f2 | 1 | SemanticChunker@1.0.0 | e4f2a8e91358e8a18ace5eaba6e63981a77f831bdcc870eda87df6a7dd05f068 | [`useLocalStorage` hook]
## `useLocalStorage` hook
In order to persist a stateful value to `localStorage`, you can create a custom hook called `useLocalStorage`. This hook will return a stateful value and a function to update it.
Implementing the hook requires you to use the `useState()` hook with a function to init... | unknown | unknown | [`useLocalStorage` hook]
## `useLocalStorage` hook
In order to persist a stateful value to `localStorage`, you can create a custom hook called `useLocalStorage`. This hook will return a stateful value and a function to update it.
Implementing the hook requires you to use the `useState()` hook with a function to init... | [`useLocalStorage` hook]
## `useLocalStorage` hook
In order to persist a stateful value to `localStorage`, you can create a custom hook called `useLocalStorage`. This hook will return a stateful value and a function to update it.
Implementing the hook requires you to use the `useState()` hook with a function to init... | code_snippets | ||
f30a96a1-272d-4f2f-8258-6ed8e4524064 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/persist-state-to-storage.md | unknown | bf8e7754-4be9-42e9-a046-ac6fda4bc5f2 | 2 | SemanticChunker@1.0.0 | 79f0a174b0f3db34e0782df5cdc5a61b9b0fe1d40aa2b9669cd529b9798af2c9 | [`useLocalStorage` hook > `useSessionStorage` hook]
## `useSessionStorage` hook
The exact same logic can be applied to persist a stateful value to `sessionStorage`. You can create a custom hook called `useSessionStorage` that returns a stateful value and a function to update it. The only difference is that you'll be ... | unknown | unknown | [`useLocalStorage` hook > `useSessionStorage` hook]
## `useSessionStorage` hook
The exact same logic can be applied to persist a stateful value to `sessionStorage`. You can create a custom hook called `useSessionStorage` that returns a stateful value and a function to update it. The only difference is that you'll be ... | [`useLocalStorage` hook > `useSessionStorage` hook]
## `useSessionStorage` hook
The exact same logic can be applied to persist a stateful value to `sessionStorage`. You can create a custom hook called `useSessionStorage` that returns a stateful value and a function to update it. The only difference is that you'll be ... | code_snippets | ||
2a892812-b398-4276-864f-3064b5d00d42 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-async-components.md | unknown | 9e0e3ea2-78f7-4e98-967a-801d583bfb2f | 0 | SemanticChunker@1.0.0 | a7af493e3f90def5168dd07b53917885d26f174652a2385f4838106a12427e61 | ---
title: Testing React components that update asynchronously with React Testing Library
shortTitle: Asynchronous component update testing
language: react
tags: [testing,event]
cover: colorful-lounge
excerpt: Testing React components that update asynchronously is pretty common. Learn how to deal with common issues and... | unknown | unknown | ---
title: Testing React components that update asynchronously with React Testing Library
shortTitle: Asynchronous component update testing
language: react
tags: [testing,event]
cover: colorful-lounge
excerpt: Testing React components that update asynchronously is pretty common. Learn how to deal with common issues and... | ---
title: Testing React components that update asynchronously with React Testing Library
shortTitle: Asynchronous component update testing
language: react
tags: [testing,event]
cover: colorful-lounge
excerpt: Testing React components that update asynchronously is pretty common. Learn how to deal with common issues and... | code_snippets | ||
36322f2d-fe48-4144-808f-d184a0af154b | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-async-components.md | unknown | 9e0e3ea2-78f7-4e98-967a-801d583bfb2f | 4 | SemanticChunker@1.0.0 | 4005b064a6ebe32f8e14f9a3493ba8da605127cc46377a9313218d91f19a8bc0 | [Components that update asynchronously > Solving the issue]
```
Now to finally write a test that works! As mentioned above, we opted to use `waitFor()` from `react-testing-library`, which was actually the only change to the original testing code, except for the dependency bump and the script change described above. H... | unknown | unknown | [Components that update asynchronously > Solving the issue]
```
Now to finally write a test that works! As mentioned above, we opted to use `waitFor()` from `react-testing-library`, which was actually the only change to the original testing code, except for the dependency bump and the script change described above. H... | [Components that update asynchronously > Solving the issue]
```
Now to finally write a test that works! As mentioned above, we opted to use `waitFor()` from `react-testing-library`, which was actually the only change to the original testing code, except for the dependency bump and the script change described above. H... | code_snippets | ||
5d88c30e-921b-4f8d-80b6-1b228c88d92a | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-async-components.md | unknown | 9e0e3ea2-78f7-4e98-967a-801d583bfb2f | 3 | SemanticChunker@1.0.0 | ce463954454703bf83f54fdf737ce027c3f73940dee72292d2b0a3782e5d3a73 | [Components that update asynchronously > Solving the issue]
## Solving the issue
Digging deeper, we found that apart from `act()`, there are also other options, such as `waitFor()` and `waitForDomChange()`. These seem more intuitive simply because of the name and way they're written (using either `async await` or pro... | unknown | unknown | [Components that update asynchronously > Solving the issue]
## Solving the issue
Digging deeper, we found that apart from `act()`, there are also other options, such as `waitFor()` and `waitForDomChange()`. These seem more intuitive simply because of the name and way they're written (using either `async await` or pro... | [Components that update asynchronously > Solving the issue]
## Solving the issue
Digging deeper, we found that apart from `act()`, there are also other options, such as `waitFor()` and `waitForDomChange()`. These seem more intuitive simply because of the name and way they're written (using either `async await` or pro... | code_snippets | ||
72488abe-c535-46ca-a514-48ee61911319 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-async-components.md | unknown | 9e0e3ea2-78f7-4e98-967a-801d583bfb2f | 5 | SemanticChunker@1.0.0 | f20e550fdf81ea605b12f0086b43a38d65dbdcd410334c56b754f8a0d362e6e5 | [Components that update asynchronously > Summary]
## Summary
- A message about code that causes React state updates not being wrapped in `act(...)` might indicate that a component updated after the test ended.
- Using `waitFor()` can solve the issue by making tests asynchronous, but you might need to bump your `react... | unknown | unknown | [Components that update asynchronously > Summary]
## Summary
- A message about code that causes React state updates not being wrapped in `act(...)` might indicate that a component updated after the test ended.
- Using `waitFor()` can solve the issue by making tests asynchronous, but you might need to bump your `react... | [Components that update asynchronously > Summary]
## Summary
- A message about code that causes React state updates not being wrapped in `act(...)` might indicate that a component updated after the test ended.
- Using `waitFor()` can solve the issue by making tests asynchronous, but you might need to bump your `react... | code_snippets | ||
92aacec8-f6a7-4a96-bde4-4657cc2bd836 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-async-components.md | unknown | 9e0e3ea2-78f7-4e98-967a-801d583bfb2f | 2 | SemanticChunker@1.0.0 | 2868d0311cdbf252ae41e7ba51f563b24f8f494cdd253da77173543d50f64806 | [Components that update asynchronously > The dreaded `act(...)` warning]
## The dreaded `act(...)` warning
While the test was obviously not working, the console was constantly nagging about wrapping the test in `act()`:
```
When testing, code that causes React state updates should be wrapped into act(...):
act(() =... | unknown | unknown | [Components that update asynchronously > The dreaded `act(...)` warning]
## The dreaded `act(...)` warning
While the test was obviously not working, the console was constantly nagging about wrapping the test in `act()`:
```
When testing, code that causes React state updates should be wrapped into act(...):
act(() =... | [Components that update asynchronously > The dreaded `act(...)` warning]
## The dreaded `act(...)` warning
While the test was obviously not working, the console was constantly nagging about wrapping the test in `act()`:
```
When testing, code that causes React state updates should be wrapped into act(...):
act(() =... | code_snippets | ||
aefc1d6c-1b17-4edb-a577-7b55db22b0e0 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-async-components.md | unknown | 9e0e3ea2-78f7-4e98-967a-801d583bfb2f | 1 | SemanticChunker@1.0.0 | adc1a5708ddc0af00f087549cac5690b94b6165ff12afb2a6b390917a9763bc8 | [Components that update asynchronously]
## Components that update asynchronously
Recently, while working on a side-project, we started using the [React DnD library](https://react-dnd.github.io/react-dnd), as we wanted to implement a multi-container drag and drop system with cards.
After spending the better part of a... | unknown | unknown | [Components that update asynchronously]
## Components that update asynchronously
Recently, while working on a side-project, we started using the [React DnD library](https://react-dnd.github.io/react-dnd), as we wanted to implement a multi-container drag and drop system with cards.
After spending the better part of a... | [Components that update asynchronously]
## Components that update asynchronously
Recently, while working on a side-project, we started using the [React DnD library](https://react-dnd.github.io/react-dnd), as we wanted to implement a multi-container drag and drop system with cards.
After spending the better part of a... | code_snippets | ||
0c8099d8-cc95-43ea-8784-4d55cbc2af1b | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-body-scroll-lock.md | unknown | db9728dc-b25a-4644-aa62-3e1aa0dac6d7 | 0 | SemanticChunker@1.0.0 | 0d83c6487a20a7d8dc5b84c4b2d9dcc5ce7f8afe1bb81bdb422d9a082d7eeeb5 | ---
title: React useBodyScrollLock hook
shortTitle: useBodyScrollLock hook
language: react
tags: [hooks,effect]
cover: folded-map
excerpt: Do you need to lock the body scroll when a modal is open? Perhaps this custom hook can help.
listed: true
dateModified: 2024-06-22
---
Modals are tricky to implement, but they pose... | unknown | unknown | ---
title: React useBodyScrollLock hook
shortTitle: useBodyScrollLock hook
language: react
tags: [hooks,effect]
cover: folded-map
excerpt: Do you need to lock the body scroll when a modal is open? Perhaps this custom hook can help.
listed: true
dateModified: 2024-06-22
---
Modals are tricky to implement, but they pose... | ---
title: React useBodyScrollLock hook
shortTitle: useBodyScrollLock hook
language: react
tags: [hooks,effect]
cover: folded-map
excerpt: Do you need to lock the body scroll when a modal is open? Perhaps this custom hook can help.
listed: true
dateModified: 2024-06-22
---
Modals are tricky to implement, but they pose... | code_snippets | ||
89ab3ecc-49db-46d6-b15a-a0f29ba67ec6 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-body-scroll-lock.md | unknown | db9728dc-b25a-4644-aa62-3e1aa0dac6d7 | 1 | SemanticChunker@1.0.0 | 1a2419346ef2872691703f6a9f94c25e3215915efcbd10bb08e983fe777d8e74 | ```jsx
const useBodyScrollLock = () => {
React.useLayoutEffect(() => {
const originalStyle = window.getComputedStyle(document.body).overflow;
document.body.style.overflow = 'hidden';
return () => (document.body.style.overflow = originalStyle);
}, []);
};
const Modal = ({ onClose }) => {
useBodyScrollLock();
re... | unknown | unknown | ```jsx
const useBodyScrollLock = () => {
React.useLayoutEffect(() => {
const originalStyle = window.getComputedStyle(document.body).overflow;
document.body.style.overflow = 'hidden';
return () => (document.body.style.overflow = originalStyle);
}, []);
};
const Modal = ({ onClose }) => {
useBodyScrollLock();
re... | ```jsx
const useBodyScrollLock = () => {
React.useLayoutEffect(() => {
const originalStyle = window.getComputedStyle(document.body).overflow;
document.body.style.overflow = 'hidden';
return () => (document.body.style.overflow = originalStyle);
}, []);
};
const Modal = ({ onClose }) => {
useBodyScrollLock();
re... | code_snippets | ||
2b49a2f8-1581-43bd-95a4-dee340f096e6 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 4 | SemanticChunker@1.0.0 | 3b7ec6c98f3770eff6bf484b5e70695783e9a4aca4bc4f189dc9b71c57f8cf1c | [Tooltip > Modal dialog]
## Modal dialog
**Modal dialogs** essentially block the user from interacting with the rest of the application until they are closed. They are used for important messages, warnings, or additional information. For the modal dialog, CSS will do a lot of the heavy lifting.
However, you'll also ... | unknown | unknown | [Tooltip > Modal dialog]
## Modal dialog
**Modal dialogs** essentially block the user from interacting with the rest of the application until they are closed. They are used for important messages, warnings, or additional information. For the modal dialog, CSS will do a lot of the heavy lifting.
However, you'll also ... | [Tooltip > Modal dialog]
## Modal dialog
**Modal dialogs** essentially block the user from interacting with the rest of the application until they are closed. They are used for important messages, warnings, or additional information. For the modal dialog, CSS will do a lot of the heavy lifting.
However, you'll also ... | code_snippets | ||
457e0970-2553-4493-a692-2b62c6d23bdc | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 2 | SemanticChunker@1.0.0 | 8e3be6f59cc2e5cff53da5488b8c85e8f05a5a0fdd1f646a5503bb03b387803c | [Tooltip > Alert]
## Alert
In order to create an **alert** component, you'll need to manage the state of the alert. This state involves the `isShown` state to determine if the alert should be displayed and the `isLeaving` state to handle the closing animation.
The alert should be displayed when the component is rend... | unknown | unknown | [Tooltip > Alert]
## Alert
In order to create an **alert** component, you'll need to manage the state of the alert. This state involves the `isShown` state to determine if the alert should be displayed and the `isLeaving` state to handle the closing animation.
The alert should be displayed when the component is rend... | [Tooltip > Alert]
## Alert
In order to create an **alert** component, you'll need to manage the state of the alert. This state involves the `isShown` state to determine if the alert should be displayed and the `isLeaving` state to handle the closing animation.
The alert should be displayed when the component is rend... | code_snippets | ||
46296e2d-e34f-422b-99f6-ac9ac73f0c2a | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 5 | SemanticChunker@1.0.0 | 74bf6501bdf0e1f3e061283e447f009ffab281152717fa3a6dc7469c17eb47ae | [Tooltip > Modal dialog]
```jsx
const Modal = ({ isVisible = false, title, content, footer, onClose }) => {
const keydownHandler = ({ key }) => {
switch (key) {
case 'Escape':
onClose();
break;
default:
}
};
React.useEffect(() => {
document.addEventListener('keydown', keydownHandler);
return () => document... | unknown | unknown | [Tooltip > Modal dialog]
```jsx
const Modal = ({ isVisible = false, title, content, footer, onClose }) => {
const keydownHandler = ({ key }) => {
switch (key) {
case 'Escape':
onClose();
break;
default:
}
};
React.useEffect(() => {
document.addEventListener('keydown', keydownHandler);
return () => document... | [Tooltip > Modal dialog]
```jsx
const Modal = ({ isVisible = false, title, content, footer, onClose }) => {
const keydownHandler = ({ key }) => {
switch (key) {
case 'Escape':
onClose();
break;
default:
}
};
React.useEffect(() => {
document.addEventListener('keydown', keydownHandler);
return () => document... | code_snippets | ||
6afd693a-e382-4e0e-81c4-02ffee313880 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 0 | SemanticChunker@1.0.0 | 79b4e3e32791ef45710b9e65091299c17ffc9b28a60911ce69dae12f62135b60 | ---
title: Tooltips, alerts and modals in React
shortTitle: Tooltip, alert & modal
language: react
tags: [components,state,effect,children]
cover: yellow-white-mug-2
excerpt: Dialog components like tooltips, alerts and modals are essential for user interaction. Learn how to create them in React.
listed: true
dateModifi... | unknown | unknown | ---
title: Tooltips, alerts and modals in React
shortTitle: Tooltip, alert & modal
language: react
tags: [components,state,effect,children]
cover: yellow-white-mug-2
excerpt: Dialog components like tooltips, alerts and modals are essential for user interaction. Learn how to create them in React.
listed: true
dateModifi... | ---
title: Tooltips, alerts and modals in React
shortTitle: Tooltip, alert & modal
language: react
tags: [components,state,effect,children]
cover: yellow-white-mug-2
excerpt: Dialog components like tooltips, alerts and modals are essential for user interaction. Learn how to create them in React.
listed: true
dateModifi... | code_snippets | ||
a5f5ae42-4351-4356-956c-85cb0f56b0ec | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 1 | SemanticChunker@1.0.0 | 462be6860f3d48a7cf977cc25dffb525a5c1e9017c9b914ac06d0846006468ee | [Tooltip]
## Tooltip
For a simple **tooltip** component, you'll need to use the `useState()` hook to manage the state of the tooltip. The tooltip should be displayed when the user **hovers** over the element and hidden when the user moves the cursor away. For that purpose, you can use the `onMouseEnter` and `onMouseL... | unknown | unknown | [Tooltip]
## Tooltip
For a simple **tooltip** component, you'll need to use the `useState()` hook to manage the state of the tooltip. The tooltip should be displayed when the user **hovers** over the element and hidden when the user moves the cursor away. For that purpose, you can use the `onMouseEnter` and `onMouseL... | [Tooltip]
## Tooltip
For a simple **tooltip** component, you'll need to use the `useState()` hook to manage the state of the tooltip. The tooltip should be displayed when the user **hovers** over the element and hidden when the user moves the cursor away. For that purpose, you can use the `onMouseEnter` and `onMouseL... | code_snippets | ||
acfd3c16-f5b2-43c0-8429-df8890e45f78 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 6 | SemanticChunker@1.0.0 | 9ee9589f6ed0ffeda83c076b3a3ef2f603f94df655adf5dead5da668f6f7757c | [Tooltip > Modal dialog]
```css
.modal {
position: fixed;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 100%;
z-index: 9999;
display: flex;
align-items: center;
justify-content: center;
background-color: rgba(0, 0, 0, 0.25);
animation-name: appear;
animation-duration: 300ms;
}
.modal-dialog {
width: 100%... | unknown | unknown | [Tooltip > Modal dialog]
```css
.modal {
position: fixed;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 100%;
z-index: 9999;
display: flex;
align-items: center;
justify-content: center;
background-color: rgba(0, 0, 0, 0.25);
animation-name: appear;
animation-duration: 300ms;
}
.modal-dialog {
width: 100%... | [Tooltip > Modal dialog]
```css
.modal {
position: fixed;
top: 0;
bottom: 0;
left: 0;
right: 0;
width: 100%;
z-index: 9999;
display: flex;
align-items: center;
justify-content: center;
background-color: rgba(0, 0, 0, 0.25);
animation-name: appear;
animation-duration: 300ms;
}
.modal-dialog {
width: 100%... | code_snippets | ||
c7a3df71-d34c-473e-aaad-e2769d5e856d | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/tooltip-alert-modal.md | unknown | b8f52127-b487-4cf5-8c4d-0615a7af5dbe | 3 | SemanticChunker@1.0.0 | a9889f8833c51b9850a6f400fee175c8c383ea0f4051770e1c4061e111e2fe58 | [Tooltip > Alert]
```css
@keyframes leave {
0% { opacity: 1 }
100% { opacity: 0 }
}
.alert {
padding: 0.75rem 0.5rem;
margin-bottom: 0.5rem;
text-align: left;
padding-right: 40px;
border-radius: 4px;
font-size: 16px;
position: relative;
}
.alert.warning {
color: #856404;
background-color: #fff3cd;
border... | unknown | unknown | [Tooltip > Alert]
```css
@keyframes leave {
0% { opacity: 1 }
100% { opacity: 0 }
}
.alert {
padding: 0.75rem 0.5rem;
margin-bottom: 0.5rem;
text-align: left;
padding-right: 40px;
border-radius: 4px;
font-size: 16px;
position: relative;
}
.alert.warning {
color: #856404;
background-color: #fff3cd;
border... | [Tooltip > Alert]
```css
@keyframes leave {
0% { opacity: 1 }
100% { opacity: 0 }
}
.alert {
padding: 0.75rem 0.5rem;
margin-bottom: 0.5rem;
text-align: left;
padding-right: 40px;
border-radius: 4px;
font-size: 16px;
position: relative;
}
.alert.warning {
color: #856404;
background-color: #fff3cd;
border... | code_snippets | ||
7369150c-98ce-4f9c-919a-3fb8813d0c59 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-effect-once.md | unknown | e193db2b-c88f-4715-9592-025e172fa06a | 0 | SemanticChunker@1.0.0 | c93864b45b96226d246a2a886a5d78a23699f1f795dc8566c651b825a325b060 | ---
title: React useEffectOnce hook
shortTitle: useEffectOnce hook
language: react
tags: [hooks,effect]
cover: pop-of-green
excerpt: Run a callback at most once when a condition becomes true, using a custom React hook.
listed: true
dateModified: 2024-06-26
---
The way `useEffect()` works in React is that it runs every... | unknown | unknown | ---
title: React useEffectOnce hook
shortTitle: useEffectOnce hook
language: react
tags: [hooks,effect]
cover: pop-of-green
excerpt: Run a callback at most once when a condition becomes true, using a custom React hook.
listed: true
dateModified: 2024-06-26
---
The way `useEffect()` works in React is that it runs every... | ---
title: React useEffectOnce hook
shortTitle: useEffectOnce hook
language: react
tags: [hooks,effect]
cover: pop-of-green
excerpt: Run a callback at most once when a condition becomes true, using a custom React hook.
listed: true
dateModified: 2024-06-26
---
The way `useEffect()` works in React is that it runs every... | code_snippets | ||
0e553be0-ef01-41f7-b89f-c69af26ca162 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-click-outside-inside.md | unknown | de955298-63b7-4620-b6f1-ebff72a0f0c8 | 0 | SemanticChunker@1.0.0 | 870ab3d505c941ae251b30196ffb35250435fc13b9a9fc73ba0bbf33f1358f36 | ---
title: React useClickOutside and useClickInside hooks
shortTitle: useClickOutside and useClickInside hooks
language: react
tags: [hooks,effect,event]
cover: clutter
excerpt: Learn how to effectively handle the click event outside or inside a component using custom hooks.
listed: true
dateModified: 2024-07-05
---
H... | unknown | unknown | ---
title: React useClickOutside and useClickInside hooks
shortTitle: useClickOutside and useClickInside hooks
language: react
tags: [hooks,effect,event]
cover: clutter
excerpt: Learn how to effectively handle the click event outside or inside a component using custom hooks.
listed: true
dateModified: 2024-07-05
---
H... | ---
title: React useClickOutside and useClickInside hooks
shortTitle: useClickOutside and useClickInside hooks
language: react
tags: [hooks,effect,event]
cover: clutter
excerpt: Learn how to effectively handle the click event outside or inside a component using custom hooks.
listed: true
dateModified: 2024-07-05
---
H... | code_snippets | ||
d944e454-454f-4158-913c-e8aaee6afd0f | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-click-outside-inside.md | unknown | de955298-63b7-4620-b6f1-ebff72a0f0c8 | 2 | SemanticChunker@1.0.0 | 3308be74b6d2bf917426fd8f4a8c1e09697521000afac6fb0c87f5942aae5865 | [`useClickOutside` hook > `useClickInside` hook]
## `useClickInside` hook
Similarly, you can create a hook to handle clicks **inside a component**. The logic is almost the same, but you need to check if the click event occurred inside the component. This hook can come in handy when you need to handle clicks on multip... | unknown | unknown | [`useClickOutside` hook > `useClickInside` hook]
## `useClickInside` hook
Similarly, you can create a hook to handle clicks **inside a component**. The logic is almost the same, but you need to check if the click event occurred inside the component. This hook can come in handy when you need to handle clicks on multip... | [`useClickOutside` hook > `useClickInside` hook]
## `useClickInside` hook
Similarly, you can create a hook to handle clicks **inside a component**. The logic is almost the same, but you need to check if the click event occurred inside the component. This hook can come in handy when you need to handle clicks on multip... | code_snippets | ||
f3262ec7-5477-44f8-a0e7-d5117dc3592c | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-click-outside-inside.md | unknown | de955298-63b7-4620-b6f1-ebff72a0f0c8 | 1 | SemanticChunker@1.0.0 | ca3dc45f5a102282a6d031a9804bbe4c8b6ecc25f9fc211a07addb0703292fba | [`useClickOutside` hook]
## `useClickOutside` hook
In order to handle clicks **outside of a component**, you'll first need to have a **reference** to the component. This is where the `useRef()` hook comes in handy. You can then use the `useEffect()` hook to add an **event listener** to the `document` and check if the... | unknown | unknown | [`useClickOutside` hook]
## `useClickOutside` hook
In order to handle clicks **outside of a component**, you'll first need to have a **reference** to the component. This is where the `useRef()` hook comes in handy. You can then use the `useEffect()` hook to add an **event listener** to the `document` and check if the... | [`useClickOutside` hook]
## `useClickOutside` hook
In order to handle clicks **outside of a component**, you'll first need to have a **reference** to the component. This is where the `useRef()` hook comes in handy. You can then use the `useEffect()` hook to add an **event listener** to the `document` and check if the... | code_snippets | ||
c07a0dc1-7ba7-4be9-8c76-b267b28e446e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/toggle.md | unknown | 8880a252-4c18-497d-be7e-6aa76966c80f | 0 | SemanticChunker@1.0.0 | 442b6560af61d9042d33b2b954178aaf18e2c84d77c8af58ab3ae98b1ca7286f | ---
title: Toggle component
language: react
tags: [components,state]
cover: cows
excerpt: Render a simple toggle component in React.
listed: true
dateModified: 2024-06-15
---
Toggle components have been a **stand-in for checkboxes** in web applications for a long time. They provide a simple way to switch between **two... | unknown | unknown | ---
title: Toggle component
language: react
tags: [components,state]
cover: cows
excerpt: Render a simple toggle component in React.
listed: true
dateModified: 2024-06-15
---
Toggle components have been a **stand-in for checkboxes** in web applications for a long time. They provide a simple way to switch between **two... | ---
title: Toggle component
language: react
tags: [components,state]
cover: cows
excerpt: Render a simple toggle component in React.
listed: true
dateModified: 2024-06-15
---
Toggle components have been a **stand-in for checkboxes** in web applications for a long time. They provide a simple way to switch between **two... | code_snippets | ||
edf0f2a4-a1d6-4faa-8c4d-de35d8e25175 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-error.md | unknown | a8691089-ded3-4581-b123-b5168e4287b4 | 0 | SemanticChunker@1.0.0 | 381de7b32cf337ecdcd3adbc45dd6c00bc6ff481ca483bd4b556d039ba222c35 | ---
title: React useError hook
shortTitle: useError hook
language: react
tags: [hooks,state,effect]
cover: cloudy-mountaintop
excerpt: Use this little trick to create an error dispatcher in React.
listed: true
dateModified: 2024-06-25
---
Throwing errors is more or less unavoidable in any application. React provides s... | unknown | unknown | ---
title: React useError hook
shortTitle: useError hook
language: react
tags: [hooks,state,effect]
cover: cloudy-mountaintop
excerpt: Use this little trick to create an error dispatcher in React.
listed: true
dateModified: 2024-06-25
---
Throwing errors is more or less unavoidable in any application. React provides s... | ---
title: React useError hook
shortTitle: useError hook
language: react
tags: [hooks,state,effect]
cover: cloudy-mountaintop
excerpt: Use this little trick to create an error dispatcher in React.
listed: true
dateModified: 2024-06-25
---
Throwing errors is more or less unavoidable in any application. React provides s... | code_snippets | ||
609003af-2489-4b88-906a-343486688e75 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-stateful-ui-components.md | unknown | 1846731b-0122-421b-83b5-06206063cfce | 1 | SemanticChunker@1.0.0 | 1912367fe96a3d734d974942bf57bd6e07c4eab8f6295d69e4ec9a22fd5f25f9 | However, over time the component's implementation might change. What happens if `expanded` in our state ends up meaning something different? Or worse yet, if it isn't reflected the same way in the interface?
Enter my "Eureka!" moment:
> The application's UI should always be considered the result of combining the comp... | unknown | unknown | However, over time the component's implementation might change. What happens if `expanded` in our state ends up meaning something different? Or worse yet, if it isn't reflected the same way in the interface?
Enter my "Eureka!" moment:
> The application's UI should always be considered the result of combining the comp... | However, over time the component's implementation might change. What happens if `expanded` in our state ends up meaning something different? Or worse yet, if it isn't reflected the same way in the interface?
Enter my "Eureka!" moment:
> The application's UI should always be considered the result of combining the comp... | code_snippets | ||
7c746eca-e9c8-46e4-b916-d6322bc106c2 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-stateful-ui-components.md | unknown | 1846731b-0122-421b-83b5-06206063cfce | 0 | SemanticChunker@1.0.0 | 49bd01695ebe3eac8abe230f73cad09795862517afcb0856a3a0f1a8eecc60a7 | ---
title: An approach to testing stateful React components
shortTitle: Stateful component testing
language: react
tags: [testing]
cover: lake-trees
excerpt: Testing stateful React components is not difficult, but did you know there's a solution that doesn't involve testing state directly?
listed: true
dateModified: 20... | unknown | unknown | ---
title: An approach to testing stateful React components
shortTitle: Stateful component testing
language: react
tags: [testing]
cover: lake-trees
excerpt: Testing stateful React components is not difficult, but did you know there's a solution that doesn't involve testing state directly?
listed: true
dateModified: 20... | ---
title: An approach to testing stateful React components
shortTitle: Stateful component testing
language: react
tags: [testing]
cover: lake-trees
excerpt: Testing stateful React components is not difficult, but did you know there's a solution that doesn't involve testing state directly?
listed: true
dateModified: 20... | code_snippets | ||
1b373422-0b2f-4b0d-812b-7b80de868481 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-fetch.md | unknown | 78a6eca0-1dd3-4850-952a-f5a26b8aa210 | 1 | SemanticChunker@1.0.0 | 242336909085c8864a19934446bc495d0aa7f361a3653feb49765bfdf7424dbd | ```jsx
const useFetch = (url, options) => {
const [response, setResponse] = React.useState(null);
const [error, setError] = React.useState(null);
const [abort, setAbort] = React.useState(() => {});
React.useEffect(() => {
const fetchData = async () => {
try {
const abortController = new AbortController();
cons... | unknown | unknown | ```jsx
const useFetch = (url, options) => {
const [response, setResponse] = React.useState(null);
const [error, setError] = React.useState(null);
const [abort, setAbort] = React.useState(() => {});
React.useEffect(() => {
const fetchData = async () => {
try {
const abortController = new AbortController();
cons... | ```jsx
const useFetch = (url, options) => {
const [response, setResponse] = React.useState(null);
const [error, setError] = React.useState(null);
const [abort, setAbort] = React.useState(() => {});
React.useEffect(() => {
const fetchData = async () => {
try {
const abortController = new AbortController();
cons... | code_snippets | ||
caa8ab86-ceae-4852-932f-df6bf415d364 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-fetch.md | unknown | 78a6eca0-1dd3-4850-952a-f5a26b8aa210 | 0 | SemanticChunker@1.0.0 | ec1d8ef280f51887f6834559eb3d51313b63007d233ae75fc7e8636d67d79c68 | ---
title: React useFetch hook
shortTitle: useFetch hook
language: react
tags: [hooks,effect,state]
cover: coworking-space
excerpt: Implement `fetch()` in a declarative manner using React hooks.
listed: true
dateModified: 2024-06-28
---
JavaScript's `fetch()` API is a modern way to make **network requests**. However, ... | unknown | unknown | ---
title: React useFetch hook
shortTitle: useFetch hook
language: react
tags: [hooks,effect,state]
cover: coworking-space
excerpt: Implement `fetch()` in a declarative manner using React hooks.
listed: true
dateModified: 2024-06-28
---
JavaScript's `fetch()` API is a modern way to make **network requests**. However, ... | ---
title: React useFetch hook
shortTitle: useFetch hook
language: react
tags: [hooks,effect,state]
cover: coworking-space
excerpt: Implement `fetch()` in a declarative manner using React hooks.
listed: true
dateModified: 2024-06-28
---
JavaScript's `fetch()` API is a modern way to make **network requests**. However, ... | code_snippets | ||
f5b9645c-c5de-471a-8d4a-628691c66b8e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-effect-primitive-dependencies.md | unknown | 5c69e409-49d6-4204-bfee-43298b9b8109 | 0 | SemanticChunker@1.0.0 | dcdcf5b02422f95f8f32121ce3b9b63d5dd2883c41951d07c514412e4b1a8880 | ---
title: Prefer primitives in useEffect dependencies
shortTitle: Primitive useEffect dependencies
language: react
tags: [hooks,effect,object,comparison]
cover: automaton
excerpt: Avoid unnecessary re-runs by using primitive dependencies in your React effect.
listed: true
dateModified: 2022-06-12
---
Conditionally fi... | unknown | unknown | ---
title: Prefer primitives in useEffect dependencies
shortTitle: Primitive useEffect dependencies
language: react
tags: [hooks,effect,object,comparison]
cover: automaton
excerpt: Avoid unnecessary re-runs by using primitive dependencies in your React effect.
listed: true
dateModified: 2022-06-12
---
Conditionally fi... | ---
title: Prefer primitives in useEffect dependencies
shortTitle: Primitive useEffect dependencies
language: react
tags: [hooks,effect,object,comparison]
cover: automaton
excerpt: Avoid unnecessary re-runs by using primitive dependencies in your React effect.
listed: true
dateModified: 2022-06-12
---
Conditionally fi... | code_snippets | ||
589ed476-bb11-4213-8936-042945d48778 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-redux-connected-components.md | unknown | 8a56f68a-ebc8-492d-bf65-b60eccb638b6 | 0 | SemanticChunker@1.0.0 | 1cfafbf2f0042e96a3328725930bf31ed931f89e7f4396156f090287e7337674 | ---
title: Testing Redux-connected components with React Testing Library
shortTitle: Redux-connected components testing
language: react
tags: [testing]
cover: sparkles
excerpt: Testing Redux-connected components is pretty common. Learn how to use this simple utility function to speed up your testing.
listed: true
dateM... | unknown | unknown | ---
title: Testing Redux-connected components with React Testing Library
shortTitle: Redux-connected components testing
language: react
tags: [testing]
cover: sparkles
excerpt: Testing Redux-connected components is pretty common. Learn how to use this simple utility function to speed up your testing.
listed: true
dateM... | ---
title: Testing Redux-connected components with React Testing Library
shortTitle: Redux-connected components testing
language: react
tags: [testing]
cover: sparkles
excerpt: Testing Redux-connected components is pretty common. Learn how to use this simple utility function to speed up your testing.
listed: true
dateM... | code_snippets | ||
5aa87e87-79bf-40c6-807f-5ef4ed2ffeff | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/testing-redux-connected-components.md | unknown | 8a56f68a-ebc8-492d-bf65-b60eccb638b6 | 1 | SemanticChunker@1.0.0 | 161d788409cd5f20f65f4d25a391b299062239db8af7ffd0570890664da4edef | ```
This utility uses the `createStore` function and the `<Provider>` component to wrap a redux-connected component to the passed state. Then it uses React Testing Library's `render` to finally render the result.
Remember to replace `import` statements with the appropriate files and exports to set up the utility as n... | unknown | unknown | ```
This utility uses the `createStore` function and the `<Provider>` component to wrap a redux-connected component to the passed state. Then it uses React Testing Library's `render` to finally render the result.
Remember to replace `import` statements with the appropriate files and exports to set up the utility as n... | ```
This utility uses the `createStore` function and the `<Provider>` component to wrap a redux-connected component to the passed state. Then it uses React Testing Library's `render` to finally render the result.
Remember to replace `import` statements with the appropriate files and exports to set up the utility as n... | code_snippets | ||
19b79f37-6c1a-4337-8343-22f4e8a7af67 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-request-animation-frame.md | unknown | b89bb752-156f-467b-b557-e11dcb1ff4ea | 0 | SemanticChunker@1.0.0 | b893d46f6cfde9e05c10f2da9f5bc41bacfaaa70d821965c4342b7dddf90e99e | ---
title: React useRequestAnimationFrame hook
shortTitle: useRequestAnimationFrame hook
language: react
tags: [hooks,effect]
cover: aerial-view-port
excerpt: Turn `requestAnimationFrame()` into a custom hook to animate your React components.
listed: true
dateModified: 2024-06-24
---
The `requestAnimationFrame()` meth... | unknown | unknown | ---
title: React useRequestAnimationFrame hook
shortTitle: useRequestAnimationFrame hook
language: react
tags: [hooks,effect]
cover: aerial-view-port
excerpt: Turn `requestAnimationFrame()` into a custom hook to animate your React components.
listed: true
dateModified: 2024-06-24
---
The `requestAnimationFrame()` meth... | ---
title: React useRequestAnimationFrame hook
shortTitle: useRequestAnimationFrame hook
language: react
tags: [hooks,effect]
cover: aerial-view-port
excerpt: Turn `requestAnimationFrame()` into a custom hook to animate your React components.
listed: true
dateModified: 2024-06-24
---
The `requestAnimationFrame()` meth... | code_snippets | ||
f584d922-c31d-4229-a4f9-e39fe412ae1f | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-portal.md | unknown | 72e94eae-46d5-4389-9d98-e3ce4245d611 | 0 | SemanticChunker@1.0.0 | 869a2da2fe856932b89c2dc293dd3a62b14a5107add0723d2f66def14aa81b21 | ---
title: React usePortal hook
shortTitle: usePortal hook
language: react
tags: [hooks,state,effect]
cover: interior-3
excerpt: Create a portal, allowing rendering of children outside the parent component, with this custom hook.
listed: true
dateModified: 2024-06-27
---
React's portals allow you to **render children ... | unknown | unknown | ---
title: React usePortal hook
shortTitle: usePortal hook
language: react
tags: [hooks,state,effect]
cover: interior-3
excerpt: Create a portal, allowing rendering of children outside the parent component, with this custom hook.
listed: true
dateModified: 2024-06-27
---
React's portals allow you to **render children ... | ---
title: React usePortal hook
shortTitle: usePortal hook
language: react
tags: [hooks,state,effect]
cover: interior-3
excerpt: Create a portal, allowing rendering of children outside the parent component, with this custom hook.
listed: true
dateModified: 2024-06-27
---
React's portals allow you to **render children ... | code_snippets | ||
84a58447-e412-4d45-9be1-5fd45dafa4dd | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-mutation-observer.md | unknown | 4eb64fd5-2261-48cf-ba52-d9facde3a458 | 1 | SemanticChunker@1.0.0 | 62b649296f8598367238bd805eee21b97870539b5563ec87ba2390daee18609f | ```jsx
const useMutationObserver = (
ref,
callback,
options = {
attributes: true,
characterData: true,
childList: true,
subtree: true,
}
) => {
React.useEffect(() => {
if (ref.current) {
const observer = new MutationObserver(callback);
observer.observe(ref.current, options);
return () => observer.disconnec... | unknown | unknown | ```jsx
const useMutationObserver = (
ref,
callback,
options = {
attributes: true,
characterData: true,
childList: true,
subtree: true,
}
) => {
React.useEffect(() => {
if (ref.current) {
const observer = new MutationObserver(callback);
observer.observe(ref.current, options);
return () => observer.disconnec... | ```jsx
const useMutationObserver = (
ref,
callback,
options = {
attributes: true,
characterData: true,
childList: true,
subtree: true,
}
) => {
React.useEffect(() => {
if (ref.current) {
const observer = new MutationObserver(callback);
observer.observe(ref.current, options);
return () => observer.disconnec... | code_snippets | ||
8a228a69-79ec-4866-a214-0c68168b834e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-mutation-observer.md | unknown | 4eb64fd5-2261-48cf-ba52-d9facde3a458 | 0 | SemanticChunker@1.0.0 | 68a63dd754b4a5d47917fe76ae3ebdd21523a62ca7ab28d23546a3b2c26e6b45 | ---
title: React useMutationObserver hook
shortTitle: useMutationObserver hook
language: react
tags: [hooks,effect]
cover: lemon-tea
excerpt: Use the `MutationObserver` API to watch for changes made to the DOM tree.
listed: true
dateModified: 2024-06-27
---
JavaScript's `MutationObserver` API is a modern way to **watc... | unknown | unknown | ---
title: React useMutationObserver hook
shortTitle: useMutationObserver hook
language: react
tags: [hooks,effect]
cover: lemon-tea
excerpt: Use the `MutationObserver` API to watch for changes made to the DOM tree.
listed: true
dateModified: 2024-06-27
---
JavaScript's `MutationObserver` API is a modern way to **watc... | ---
title: React useMutationObserver hook
shortTitle: useMutationObserver hook
language: react
tags: [hooks,effect]
cover: lemon-tea
excerpt: Use the `MutationObserver` API to watch for changes made to the DOM tree.
listed: true
dateModified: 2024-06-27
---
JavaScript's `MutationObserver` API is a modern way to **watc... | code_snippets | ||
04225816-c047-4483-bc76-880a82701112 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-script.md | unknown | 949f5d23-f4cb-4615-af0c-06d6391a8c20 | 0 | SemanticChunker@1.0.0 | 6822ab5de4b5cd9f2638e5985a431b80320b02b42c099a5853c80d28e8ab00b7 | ---
title: React useScript hook
shortTitle: useScript hook
language: react
tags: [hooks,effect,state,event]
cover: travel-mug-3
excerpt: Ever wanted to dynamically load an external script in React? Here's a trick to help you out.
listed: true
dateModified: 2024-06-23
---
Have you ever wanted to **dynamically load an e... | unknown | unknown | ---
title: React useScript hook
shortTitle: useScript hook
language: react
tags: [hooks,effect,state,event]
cover: travel-mug-3
excerpt: Ever wanted to dynamically load an external script in React? Here's a trick to help you out.
listed: true
dateModified: 2024-06-23
---
Have you ever wanted to **dynamically load an e... | ---
title: React useScript hook
shortTitle: useScript hook
language: react
tags: [hooks,effect,state,event]
cover: travel-mug-3
excerpt: Ever wanted to dynamically load an external script in React? Here's a trick to help you out.
listed: true
dateModified: 2024-06-23
---
Have you ever wanted to **dynamically load an e... | code_snippets | ||
6901acf4-44b1-47ba-b092-2d187608960e | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-script.md | unknown | 949f5d23-f4cb-4615-af0c-06d6391a8c20 | 1 | SemanticChunker@1.0.0 | 063f2b31b8f2ccfbfa82594a61b43f0490613233cbffb94d2ac5bbd4fa52b628 | Finally, you can use `EventTarget.addEventListener()` to listen for `'load'` and `'error'` events and handle them by updating the `data-status` attribute and the `status` state variable. When the component unmounts, you can use `Document.removeEventListener()` to remove any listeners bound to the element. | unknown | unknown | Finally, you can use `EventTarget.addEventListener()` to listen for `'load'` and `'error'` events and handle them by updating the `data-status` attribute and the `status` state variable. When the component unmounts, you can use `Document.removeEventListener()` to remove any listeners bound to the element. | Finally, you can use `EventTarget.addEventListener()` to listen for `'load'` and `'error'` events and handle them by updating the `data-status` attribute and the `status` state variable. When the component unmounts, you can use `Document.removeEventListener()` to remove any listeners bound to the element. | code_snippets | ||
a9f6428d-2a9d-48d8-98d1-3745648ace28 | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-script.md | unknown | 949f5d23-f4cb-4615-af0c-06d6391a8c20 | 2 | SemanticChunker@1.0.0 | ea5a45c402b1812299cbaad0f84554ffcf72afe9bb6e9755b5d5071cb285c6df | ```jsx
const useScript = src => {
const [status, setStatus] = React.useState(src ? 'loading' : 'idle');
React.useEffect(() => {
if (!src) {
setStatus('idle');
return;
}
let script = document.querySelector(`script[src="${src}"]`);
if (!script) {
script = document.createElement('script');
script.src = src;
... | unknown | unknown | ```jsx
const useScript = src => {
const [status, setStatus] = React.useState(src ? 'loading' : 'idle');
React.useEffect(() => {
if (!src) {
setStatus('idle');
return;
}
let script = document.querySelector(`script[src="${src}"]`);
if (!script) {
script = document.createElement('script');
script.src = src;
... | ```jsx
const useScript = src => {
const [status, setStatus] = React.useState(src ? 'loading' : 'idle');
React.useEffect(() => {
if (!src) {
setStatus('idle');
return;
}
let script = document.querySelector(`script[src="${src}"]`);
if (!script) {
script = document.createElement('script');
script.src = src;
... | code_snippets | ||
37cfd3ee-6800-4913-a49f-d76328f953ae | unknown | file:///home/sanjeev/Downloads/depthapi/datasets/30-seconds-of-code/content/snippets/react/s/use-title.md | unknown | 7f7f295e-4054-479e-940b-6b45b37504cb | 0 | SemanticChunker@1.0.0 | 5bf19619aa92366d401c91e032b4f779132230f04b835237f4ee15b6a88f8a16 | ---
title: How can I use a React hook to change the title of a page?
shortTitle: useTitle hook
language: react
tags: [hooks,effect]
cover: chubby-squirrel
excerpt: Ever wanted to change the title of a page in a React app? You can create a custom hook to do just that.
listed: true
dateModified: 2024-06-25
---
React doe... | unknown | unknown | ---
title: How can I use a React hook to change the title of a page?
shortTitle: useTitle hook
language: react
tags: [hooks,effect]
cover: chubby-squirrel
excerpt: Ever wanted to change the title of a page in a React app? You can create a custom hook to do just that.
listed: true
dateModified: 2024-06-25
---
React doe... | ---
title: How can I use a React hook to change the title of a page?
shortTitle: useTitle hook
language: react
tags: [hooks,effect]
cover: chubby-squirrel
excerpt: Ever wanted to change the title of a page in a React app? You can create a custom hook to do just that.
listed: true
dateModified: 2024-06-25
---
React doe... | code_snippets |
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