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08aee07 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 | # easy-stack Is Great for any javascript stack (LIFO)
JS Stacks are different from queues because they are LIFO (last in first out) unlike a queue which is FIFO (first in first out). While a Queue executes in order, a stack executes whatever was most recently added to the stack, much like a reading a stack of papers on your desk. If you read half the papers and someone puts more on the top you start with the new ones first.
1. socket messages
2. priority async operations
3. priority synchronous operations
4. stacks you want to start running automatically when you add new items
5. any simple or complex stack operations
6. base class to extend
7. anything else that needs a stack
# Stable and easy to use
Works great in node.js, webpack, browserify, or any other commonjs loader or compiler. To use in plain old vanilla browser javascript without common js just replace the requires in the examples with script tags. We show that below too. Any time you need a JS stack easy-stack is there for you.
` require('easy-stack'); ` for ES6 node.
` require('easy-stack/es5.js'); ` for ES5 node and browser.
**npm install easy-stack**
npm info : [See npm trends and stats for easy-stack](http://npm-stat.com/charts.html?package=easy-stack&author=&from=&to=)
    
[](https://github.com/RIAEvangelist)
GitHub info :
  
Package details websites :
* [GitHub.io site](http://riaevangelist.github.io/easy-stack/ "easy-stack documentation"). A prettier version of this site.
* [NPM Module](https://www.npmjs.org/package/easy-stack "easy-stack npm module"). The npm page for the easy-stack module.
This work is licenced via the [DBAD Public Licence](http://www.dbad-license.org/).
## Exposed methods and values
|key|type|parameters|default|description|
|----|----|----|----|----|
|add|function|any number of functions| |adds all parameter functions to stack and starts execution if autoRun is true, stack is not already running and stack is not forcibly stopped |
|next|function| | |executes next item in stack if stack is not forcibly stopped|
|clear|function| | |removes remaining items in the stack|
|contents|Array| | | stack instance contents |
|autoRun|Bool| | true |should autoRun stack when new item added|
|stop|Bool| | false |setting this to true will forcibly prevent the stack from executing|
### Basic stack use in node, react, browserify, webpack or any other commonjs implementation
```javascript
var Stack=require('easy-stack');
//create a new Stack instance
var stack=new Stack;
for(var i=0; i<50; i++){
//add a bunch of stuff to the stack
stack.add(makeRequest);
}
function makeRequest(){
//do stuff
console.log('making some request');
this.next();
}
```
### Basic browser use
The only difference is including via a script tag instead of using require.
```html
<html>
<head>
<!-- this is the only difference -->
<script src='./es5.js'></script>
<script>
console.log('my awesome app script');
var stack=new Stack;
for(var i=0; i<50; i++){
stack.add(makeRequest);
}
function makeRequest(){
console.log('making some request');
this.next();
}
</script>
</head>
<body>
</body>
</html>
```
### Basic use with websockets in node, react, browserify, webpack or any other commonjs implementation
This allows you to start adding requests immediately and only execute if the websocket is connected. To use in plain browser based JS without webpack or browserify just replace the requires with the script tag.
```javascript
var Stack=require('easy-stack');
//ws-share just makes it easier to share websocket code and ensure you don't open a websocket more than once
var WS=require('ws-share');
//js-message makes it easy to create and parse normalized JSON messages.
var Message=require('js-message');
//create a new Stack instance
var stack=new Stack;
//force stop until websocket opened
stack.stop=true;
var ws=null;
function startWS(){
//websocket.org rocks
ws=new WS('wss://echo.websocket.org/?encoding=text');
ws.on(
'open',
function(){
ws.on(
'message',
handleResponse
);
//now that websocket is opened allow auto execution
stack.stop=false;
stack.next();
}
);
ws.on(
'error',
function(err){
//stop execution of stack if there is an error because the websocket is likely closed
stack.stop=true;
//remove remaining items in the stack
stack.clear();
throw(err);
}
);
ws.on(
'close',
function(){
//stop execution of stack when the websocket closed
stack.stop=true;
}
);
}
//simulate a lot of requests being stackd up for the websocket
for(var i=0; i<50; i++){
stack.add(makeRequest);
}
var messageID=0;
function handleResponse(e){
var message=new Message;
message.load(e.data);
console.log(message.type,message.data);
}
function makeRequest(){
messageID++;
var message=new Message;
message.type='testMessage';
message.data=messageID;
ws.send(message.JSON);
this.next();
}
startWS();
```
# Extending ES6 stack.js
```javascript
const Stack=require('easy-stack');
class MyAwesomestack extends Stack{
isStopped(){
return this.stop;
}
removeThirdItem(){
this.contents.splice(2,1);
return this.contents;
}
};
```
# Extending stack node es5 or browser
```javascript
var Stack=require('easy-stack');
//MyAwesomestack inherits from stack
MyAwesomestack.prototype = new Stack;
//Constructor will extend stack
MyAwesomestack.prototype.constructor = MyAwesomestack;
function MyAwesomestack(){
//extend with some stuff your app needs,
//maybe npm publish your extention with easy-stack as a dependancy?
Object.defineProperties(
this,
{
isStopped:{
enumerable:true,
get:checkStopped,
set:checkStopped
},
removeThirdItem:{
enumerable:true,
writable:false,
value:removeThird
}
}
);
//enforce Object.assign for extending by locking down Class structure
//no willy nilly cowboy coding
Object.seal(this);
function checkStopped(){
return this.stop;
}
function removeThird(){
//get the stack content
var list=this.contents;
//modify the stack content
list.splice(2,1);
//save the modified stack content
this.contents=list;
return this.contents;
}
}
```
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