59 lines
1.9 KiB
Markdown
59 lines
1.9 KiB
Markdown
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---
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id: 587d8254367417b2b2512c70
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title: Create and Add to Sets in ES6
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challengeType: 1
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videoUrl: ''
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localeTitle: 在ES6中创建和添加集
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---
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## Description
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<section id="description">既然您已经完成了ES5，那么您将在ES6中执行类似的操作。这将相当容易。 ES6包含一个内置的数据结构<code>Set</code>现在包含了您手动编写的许多操作。我们来看看：创建一个新的空集： <code>var set = new Set();</code>您可以使用值创建一个集合： <code>var set = new Set(1);</code>您可以使用数组创建一个集合： <code>var set = new Set([1, 2, 3]);</code>创建集合后，可以使用<code>add</code>方法添加所需的值： <blockquote> var set = new Set（[1,2,3]）; <br> set.add（[4,5,6]）; </blockquote>提醒一下，集合是一种不能包含重复值的数据结构： <blockquote> var set = new Set（[1,2,3,1,2,3]）; <br> // set仅包含[1,2,3] </blockquote></section>
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## Instructions
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<section id="instructions">在本练习中，返回一个具有以下值的集合： <code>1, 2, 3, 'Taco', 'Cat', 'Awesome'</code> </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: '您的<code>Set</code>应该只包含值<code>1, 2, 3, Taco, Cat, Awesome</code> 。'
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testString: 'assert(function(){var test = checkSet(); return (test.size == 6) && test.has(1) && test.has(2) && test.has(3) && test.has("Taco") && test.has("Cat") && test.has("Awesome");}, "Your <code>Set</code> should only contain the values <code>1, 2, 3, Taco, Cat, Awesome</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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function checkSet() {
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var set = new Set([1, 2, 3, 3, 2, 1, 2, 3, 1]);
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// change code below this line
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// change code above this line
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console.log(set);
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return set;
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}
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checkSet();
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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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