ee1e8abd87
* feat(tools): add seed/solution restore script * chore(curriculum): remove empty sections' markers * chore(curriculum): add seed + solution to Chinese * chore: remove old formatter * fix: update getChallenges parse translated challenges separately, without reference to the source * chore(curriculum): add dashedName to English * chore(curriculum): add dashedName to Chinese * refactor: remove unused challenge property 'name' * fix: relax dashedName requirement * fix: stray tag Remove stray `pre` tag from challenge file. Signed-off-by: nhcarrigan <nhcarrigan@gmail.com> Co-authored-by: nhcarrigan <nhcarrigan@gmail.com>
69 lines
1.6 KiB
Markdown
69 lines
1.6 KiB
Markdown
---
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id: 587d8254367417b2b2512c70
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title: 在ES6中创建和添加集
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challengeType: 1
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videoUrl: ''
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dashedName: create-and-add-to-sets-in-es6
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---
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# --description--
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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`Set`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： `var set = new Set();`您可以使用值创建一个集合： `var set = new Set(1);`您可以使用数组创建一个集合： `var set = new Set([1, 2, 3]);`创建集合后，可以使用`add`方法添加所需的值：
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> var set = new Set（\[1,2,3]）;
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> set.add（\[4,5,6]）;
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提醒一下，集合是一种不能包含重复值的数据结构：
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> var set = new Set（\[1,2,3,1,2,3]）;
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> // set仅包含\[1,2,3]
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# --instructions--
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在本练习中，返回一个具有以下值的集合： `1, 2, 3, 'Taco', 'Cat', 'Awesome'`
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# --hints--
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您的`Set`应该只包含值`1, 2, 3, Taco, Cat, Awesome` 。
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```js
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assert(
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(function () {
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var test = checkSet();
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return (
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test.size == 6 &&
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test.has(1) &&
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test.has(2) &&
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test.has(3) &&
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test.has('Taco') &&
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test.has('Cat') &&
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test.has('Awesome')
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);
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})()
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);
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```
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# --seed--
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## --seed-contents--
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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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// Only change code below this line
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// Only change code above this line
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console.log(Array.from(set));
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return set;
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}
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checkSet();
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```
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# --solutions--
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```js
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function checkSet(){var set = new Set([1,2,3,'Taco','Cat','Awesome']);
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return set;}
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```
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