65 lines
1.3 KiB
Markdown
65 lines
1.3 KiB
Markdown
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---
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id: 587d7b88367417b2b2512b47
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title: Use the Rest Operator with Function Parameters
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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(sum(0,1,2) === 3, "The result of <code>sum(0,1,2)</code> should be 3");'
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- text: ''
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testString: 'assert(sum(1,2,3,4) === 10, "The result of <code>sum(1,2,3,4)</code> should be 10");'
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- text: ''
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testString: 'assert(sum(5) === 5, "The result of <code>sum(5)</code> should be 5");'
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- text: ''
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testString: 'assert(sum() === 0, "The result of <code>sum()</code> should be 0");'
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- text: ''
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testString: 'getUserInput => assert(getUserInput("index").match(/function\s+sum\s*\(\s*...args\s*\)\s*{/g), "The <code>sum</code> function uses the <code>...</code> spread operator on the <code>args</code> parameter.");'
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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 sum = (function() {
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"use strict";
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return function sum(x, y, z) {
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const args = [ x, y, z ];
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return args.reduce((a, b) => a + b, 0);
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};
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})();
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console.log(sum(1, 2, 3)); // 6
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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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