freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/basic-javascript/manipulate-arrays-with-push.english.md

id, title, challengeType, videoUrl, forumTopicId

id	title	challengeType	videoUrl	forumTopicId
56bbb991ad1ed5201cd392cb	Manipulate Arrays With push()	1	https://scrimba.com/c/cnqmVtJ	18237

Description

An easy way to append data to the end of an array is via the push() function. .push() takes one or more parameters and "pushes" them onto the end of the array.

Examples:

var arr1 = [1,2,3];
arr1.push(4);
// arr1 is now [1,2,3,4]

var arr2 = ["Stimpson", "J", "cat"];
arr2.push(["happy", "joy"]);
// arr2 now equals ["Stimpson", "J", "cat", ["happy", "joy"]]

Instructions

Push ["dog", 3] onto the end of the myArray variable.

Tests

tests:
  - text: <code>myArray</code> should now equal <code>[["John", 23], ["cat", 2], ["dog", 3]]</code>.
    testString: assert((function(d){if(d[2] != undefined && d[0][0] == 'John' && d[0][1] === 23 && d[2][0] == 'dog' && d[2][1] === 3 && d[2].length == 2){return true;}else{return false;}})(myArray));

Challenge Seed

// Setup
var myArray = [["John", 23], ["cat", 2]];

// Only change code below this line

After Test

(function(z){return 'myArray = ' + JSON.stringify(z);})(myArray);

Solution

var myArray = [["John", 23], ["cat", 2]];
myArray.push(["dog",3]);