60 lines
2.5 KiB
Markdown
60 lines
2.5 KiB
Markdown
---
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id: 587d7db8367417b2b2512ba3
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title: Match Whitespace
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challengeType: 1
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videoUrl: ''
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localeTitle: 匹配空白
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---
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## Description
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<section id="description">迄今为止的挑战包括匹配的字母和数字字母。您还可以匹配字母之间的空格或空格。您可以使用<code>\s</code>搜索空格，这是一个小写的<code>s</code> 。此模式不仅匹配空格，还匹配回车符，制表符，换页符和换行符。你可以认为它类似于字符类<code>[ \r\t\f\n\v]</code> 。 <blockquote>让whiteSpace =“空白。到处都是空白！” <br>让spaceRegex = / \ s / g; <br> whiteSpace.match（spaceRegex）; <br> //返回[“”，“”] <br></blockquote></section>
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## Instructions
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<section id="instructions">更改正则表达式<code>countWhiteSpace</code>以查找字符串中的多个空格字符。 </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: 你的正则表达式应该使用全局标志。
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testString: 'assert(countWhiteSpace.global, "Your regex should use the global flag.");'
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- text: 你的正则表达式应该使用速记字符
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testString: 'assert(/\\s/.test(countWhiteSpace.source), "Your regex should use the shorthand character <code>\s</code> to match all whitespace characters.");'
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- text: 你的正则表达式应该在<code>"Men are from Mars and women are from Venus."</code>找到八个空格<code>"Men are from Mars and women are from Venus."</code>
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testString: 'assert("Men are from Mars and women are from Venus.".match(countWhiteSpace).length == 8, "Your regex should find eight spaces in <code>"Men are from Mars and women are from Venus."</code>");'
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- text: '你的正则表达式应该在<code>"Space: the final frontier."</code>找到三个空格<code>"Space: the final frontier."</code>'
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testString: 'assert("Space: the final frontier.".match(countWhiteSpace).length == 3, "Your regex should find three spaces in <code>"Space: the final frontier."</code>");'
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- text: ''
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testString: 'assert("MindYourPersonalSpace".match(countWhiteSpace) == null, "Your regex should find no spaces in <code>"MindYourPersonalSpace"</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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let sample = "Whitespace is important in separating words";
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let countWhiteSpace = /change/; // Change this line
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let result = sample.match(countWhiteSpace);
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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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