Here's a quick, friendly walkthrough of how challenges on Praxide work. In the Code tab above, you'll spot a starter function that looks just like this: function hello() { } All you have to do is drop return "hello praxide.com" between the curly braces { } and then tap the Check button. Get it right, and the button will light up red and …

Build a function that accepts two numbers as its arguments and hands back their total. Examples addition(3, 2) ➞ 5 addition(-3, -6) ➞ -9 addition(7, 3) ➞ 10 Notes Remember to return your answer. Stuck on a challenge? Grab a quick hint in the Resources tab. Totally stuck? Reveal the answer in the Solutions tab.

Create a function that receives an integer minutes and transforms it into seconds. Examples convert(5) ➞ 300 convert(3) ➞ 180 convert(2) ➞ 120 Notes Remember to return your answer. Feeling stuck on a challenge? Find a hint in the Resources tab. Really stuck? Unlock the answer in the Solutions tab.

Build a function that receives a number as its argument, adds +1 to it, and hands back the result. Examples addition(0) ➞ 1 addition(9) ➞ 10 addition(-3) ➞ -2 Notes Remember to return your answer. Whenever a challenge trips you up, look for guidance in the Resources tab. And if you're truly stuck, unlock solutions in the So …

Build a function that receives the base and height of a triangle and returns its area. Examples triArea(3, 2) ➞ 3 triArea(7, 4) ➞ 14 triArea(10, 10) ➞ 50 Notes A triangle's area equals: (base * height) / 2 Remember to return your answer. Whenever a challenge trips you up, find guidance in the Resources tab. And if you're really st …

Build a function that receives an age in years and returns that age in days. Examples calcAge(65) ➞ 23725 calcAge(0) ➞ 0 calcAge(20) ➞ 7300 Notes Treat every year as 365 days for this challenge. Skip leap years and the days between the last birthday and today. Assume only positive integer inputs.

Repair the code in the code tab so it passes this challenge (only syntax errors). Study the examples below to understand what the function should do. Examples cubes(3) ➞ 27 cubes(5) ➞ 125 cubes(10) ➞ 1000 Notes READ EVERY WORD CAREFULLY, CHARACTER BY CHARACTER! Don't overthink this challenge; it's really not that hard.

Build a function that receives an array holding only numbers and returns its first element. Examples getFirstValue([1, 2, 3]) ➞ 1 getFirstValue([80, 5, 100]) ➞ 80 getFirstValue([-500, 0, 50]) ➞ -500 Notes The first element in any array always sits at index 0.

Build a function that receives voltage and current and returns the resulting power. Examples circuitPower(230, 10) ➞ 2300 circuitPower(110, 3) ➞ 330 circuitPower(480, 20) ➞ 9600 Notes Needs the basic calculation of electrical circuits (see Resources for info).

Build a function that takes a number of hours and gives back the total seconds. Examples howManySeconds(2) ➞ 7200 howManySeconds(10) ➞ 36000 howManySeconds(24) ➞ 86400 Notes There are 60 seconds in a minute and 60 minutes in an hour.

Write a function that works out the largest possible length for a triangle's third edge, given that every side is a whole number. Examples nextEdge(8, 10) ➞ 17 nextEdge(5, 7) ➞ 11 nextEdge(9, 2) ➞ 10 Notes (side1 + side2) - 1 = maximum range of third edge. Every side length of the triangle is a positive integer. Don't forget to return …

JavaScript hands you a single operator that returns whatever is left over after a division. Two numbers arrive as parameters, and the first divided by the second leaves a remainder, which could well be zero. Send that value back. Examples remainder(1, 3) ➞ 1 remainder(3, 4) ➞ 3 remainder(-9, 45) ➞ -9 r …

Build a function that accepts a length and a width, then returns the perimeter of a rectangle. Examples findPerimeter(6, 7) ➞ 26 findPerimeter(20, 10) ➞ 60 findPerimeter(2, 9) ➞ 22 Notes Remember to return the result. If you get stuck, look for hints in the Resources tab. If you're really stuck, check the Solutions tab.

Create a function that glues the string "something" together with a space " " and whatever argument a you pass in. Examples giveMeSomething("is better than nothing") ➞ "something is better than nothing" giveMeSomething("Bob Jane") ➞ "something Bob Jane" giveMeSomething("something") ➞ "something something" Notes Assume an input is given.

Repair the code in the code tab so this challenge passes (only syntax errors). Study the examples below to get a sense of what the function should do. Examples squared(5) ➞ 25 squared(9) ➞ 81 squared(100) ➞ 10000 Notes READ EVERY WORD CAREFULLY, CHARACTER BY CHARACTER! Don't overthink this challenge; it's not supposed to be …

Build a function that accepts a single number and hands back true whenever that value sits at zero or below, and false in every other situation. Examples lessThanOrEqualToZero(5) ➞ false lessThanOrEqualToZero(0) ➞ true lessThanOrEqualToZero(-2) ➞ true Notes Remember to actually return your answer, not just compute it. Stuck partway through a puzzle?

For a regular polygon that has n sides, calculate and return the combined measure of all its interior angles (in degrees). Examples sumPolygon(3) ➞ 180 sumPolygon(4) ➞ 360 sumPolygon(6) ➞ 720 Notes n will always be greater than 2. The formula (n - 2) x 180 gives the sum of all the measures of the angles of an n-sided polygon.

You're keeping the scoreboard for a basketball game. Given how many 2-pointers and how many 3-pointers a team sank, add everything up and return the team's total score. Examples points(1, 1) ➞ 5 points(7, 5) ➞ 29 points(38, 8) ➞ 100 Notes N/A

A beginner picking up JavaScript set out to write a function. Their code is meant to join the string name it receives with the string "Praxide" and stash the outcome inside a variable named result. Something has gone wrong, so lend a hand and get it working. Examples nameString("Kiran") ➞ "KiranPraxide" nameString("Theo") ➞ "TheoPraxide" nameString("javaScript")

Take two numbers and return true when they add up to something under 100, and return false when they don't. Examples lessThan100(22, 15) ➞ true // 22 + 15 = 37 lessThan100(83, 34) ➞ false // 83 + 34 = 117 lessThan100(3, 77) ➞ true Notes N/A