freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/iterate-with-javascript-while-loops.english.md

id	title	challengeType	videoUrl	forumTopicId
cf1111c1c11feddfaeb1bdef	Iterate with JavaScript While Loops	1	https://scrimba.com/c/c8QbnCM	18220

Description

You can run the same code multiple times by using a loop. The first type of loop we will learn is called a while loop because it runs "while" a specified condition is true and stops once that condition is no longer true.

var ourArray = [];
var i = 0;
while(i < 5) {
  ourArray.push(i);
  i++;
}

In the code example above, the while loop will execute 5 times and append the numbers 0 through 4 to ourArray.

Let's try getting a while loop to work by pushing values to an array.

Instructions

Add the numbers 5 through 0 (inclusive) in descending order to myArray using a while loop.

Tests

tests:
  - text: You should be using a <code>while</code> loop for this.
    testString: assert(code.match(/while/g));
  - text: <code>myArray</code> should equal <code>[5,4,3,2,1,0]</code>.
    testString: assert.deepEqual(myArray, [5,4,3,2,1,0]);

Challenge Seed

// Setup
var myArray = [];

// Only change code below this line.

After Test

if(typeof myArray !== "undefined"){(function(){return myArray;})();}

Solution

var myArray = [];
var i = 5;
while(i >= 0) {
  myArray.push(i);
  i--;
}