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

id, title, challengeType, videoUrl, forumTopicId, localeTitle

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

Description

一个简单的方法将数据添加到一个数组的末尾是通过push()函数。 .push()接受一个或多个参数，并把它“推”入到数组的末尾。

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

Instructions

把["dog", 3]“推”入到myArray变量的末尾。

Tests

tests:
  - text: <code>myArray</code>应该等于<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

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

// 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]);