66 lines
1.6 KiB
Markdown
66 lines
1.6 KiB
Markdown
---
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id: 56bbb991ad1ed5201cd392cb
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title: Manipulate Arrays With push()
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challengeType: 1
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videoUrl: ''
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localeTitle: 用push（）操纵数组
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---
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## Description
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<section id="description">将数据附加到数组末尾的简单方法是通过<code>push()</code>函数。 <code>.push()</code>接受一个或多个<dfn>参数</dfn>并将它们“推”到数组的末尾。 <blockquote> var arr = [1,2,3]; <br> arr.push（4）; <br> // arr现在是[1,2,3,4] </blockquote></section>
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## Instructions
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<section id="instructions">将<code>["dog", 3]</code>推到<code>myArray</code>变量的末尾。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: '<code>myArray</code>现在应该等于<code>[["John", 23], ["cat", 2], ["dog", 3]]</code> 。'
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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), "<code>myArray</code> should now equal <code>[["John", 23], ["cat", 2], ["dog", 3]]</code>.");'
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```
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</section>
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## Challenge Seed
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<section id='challengeSeed'>
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<div id='js-seed'>
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```js
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// Example
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var ourArray = ["Stimpson", "J", "cat"];
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ourArray.push(["happy", "joy"]);
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// ourArray now equals ["Stimpson", "J", "cat", ["happy", "joy"]]
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// Setup
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var myArray = [["John", 23], ["cat", 2]];
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// Only change code below this line.
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```
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</div>
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### After Test
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<div id='js-teardown'>
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```js
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console.info('after the test');
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```
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</div>
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</section>
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## Solution
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<section id='solution'>
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```js
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// solution required
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```
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</section>
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