75 lines
2.6 KiB
Markdown
75 lines
2.6 KiB
Markdown
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---
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id: a77dbc43c33f39daa4429b4f
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title: Boo who
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isRequired: true
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challengeType: 5
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videoUrl: ''
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localeTitle: 嘘谁
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---
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## Description
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<section id="description">检查值是否归类为布尔基元。返回true或false。布尔基元是true和false。如果卡住，请记得使用<a href="http://forum.freecodecamp.org/t/how-to-get-help-when-you-are-stuck/19514" target="_blank">Read-Search-Ask</a> 。尝试配对程序。编写自己的代码。 </section>
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## Instructions
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<section id="instructions">
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</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>booWho(true)</code>应该返回true。
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testString: 'assert.strictEqual(booWho(true), true, "<code>booWho(true)</code> should return true.");'
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- text: <code>booWho(false)</code>应该返回true。
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testString: 'assert.strictEqual(booWho(false), true, "<code>booWho(false)</code> should return true.");'
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- text: '<code>booWho([1, 2, 3])</code>应该返回false。'
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testString: 'assert.strictEqual(booWho([1, 2, 3]), false, "<code>booWho([1, 2, 3])</code> should return false.");'
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- text: '<code>booWho([].slice)</code>应该返回false。'
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testString: 'assert.strictEqual(booWho([].slice), false, "<code>booWho([].slice)</code> should return false.");'
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- text: '<code>booWho({ "a": 1 })</code>应该返回false。'
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testString: 'assert.strictEqual(booWho({ "a": 1 }), false, "<code>booWho({ "a": 1 })</code> should return false.");'
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- text: <code>booWho(1)</code>应该返回false。
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testString: 'assert.strictEqual(booWho(1), false, "<code>booWho(1)</code> should return false.");'
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- text: <code>booWho(NaN)</code>应该返回false。
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testString: 'assert.strictEqual(booWho(NaN), false, "<code>booWho(NaN)</code> should return false.");'
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- text: <code>booWho("a")</code>应该返回false。
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testString: 'assert.strictEqual(booWho("a"), false, "<code>booWho("a")</code> should return false.");'
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- text: <code>booWho("true")</code>应该返回false。
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testString: 'assert.strictEqual(booWho("true"), false, "<code>booWho("true")</code> should return false.");'
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- text: <code>booWho("false")</code>应该返回false。
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testString: 'assert.strictEqual(booWho("false"), false, "<code>booWho("false")</code> should return false.");'
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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 booWho(bool) {
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// What is the new fad diet for ghost developers? The Boolean.
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return bool;
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}
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booWho(null);
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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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