60 lines
1.1 KiB
Markdown
60 lines
1.1 KiB
Markdown
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---
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id: 587d7b89367417b2b2512b48
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title: Use the Spread Operator to Evaluate Arrays In-Place
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challengeType: 1
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videoUrl: ''
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localeTitle: ''
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---
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## Description
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undefined
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## Instructions
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undefined
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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: ''
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testString: 'assert(arr2.every((v, i) => v === arr1[i]), "<code>arr2</code> is correct copy of <code>arr1</code>.");'
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- text: ''
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testString: 'getUserInput => assert(getUserInput("index").match(/\[\s*...arr1\s*\]/g),"<code>...</code> spread operator was used to duplicate <code>arr1</code>.");'
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- text: ''
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testString: 'assert((arr1, arr2) => {arr1.push("JUN"); return arr2.length < arr1.length},"<code>arr2</code> remains unchanged when <code>arr1</code> is changed.");'
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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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const arr1 = ['JAN', 'FEB', 'MAR', 'APR', 'MAY'];
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let arr2;
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(function() {
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"use strict";
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arr2 = []; // change this line
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})();
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console.log(arr2);
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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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