74 lines
2.3 KiB
Markdown
74 lines
2.3 KiB
Markdown
---
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id: 587d7db9367417b2b2512ba4
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title: Match Non-Whitespace Characters
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challengeType: 1
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forumTopicId: 18210
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localeTitle: 匹配非空白字符
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---
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## Description
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<section id='description'>
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已经学会了如何使用带有小写<code>s</code>的缩写<code>\s</code>来搜寻空白字符。还可以搜寻除了空格之外的所有内容。
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使用<code>\S</code>搜寻非空白字符，其中<code>S</code>是大写。此匹配模式将不匹配空格、回车符、制表符、换页符和换行符。可以认为这类似于元字符<code>[^\r\t\f\n\v]</code>。
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```js
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let whiteSpace = "Whitespace. Whitespace everywhere!"
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let nonSpaceRegex = /\S/g;
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whiteSpace.match(nonSpaceRegex).length; // Returns 32
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```
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</section>
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## Instructions
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<section id='instructions'>
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修改正则表达式<code>countNonWhiteSpace</code>以查找字符串中的多个非空字符。
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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: 你的正则表达式应该使用全局状态修正符。
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testString: assert(countNonWhiteSpace.global);
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- text: 正则表达式应该使用元字符 <code>\S/code> 来匹配所有的非空格字符。
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testString: assert(/\\S/.test(countNonWhiteSpace.source));
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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>中匹配到 35 个非空白字符。"
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testString: assert("Men are from Mars and women are from Venus.".match(countNonWhiteSpace).length == 35);
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- text: '你的正则表达式应该在<code>"Space: the final frontier."</code>中匹配到 23 个非空白字符。'
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testString: 'assert("Space: the final frontier.".match(countNonWhiteSpace).length == 23);'
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- text: "你的正则表达式应该在<code>'MindYourPersonalSpace'</code>中匹配到 21 个非空白字符。"
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testString: assert("MindYourPersonalSpace".match(countNonWhiteSpace).length == 21);
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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 countNonWhiteSpace = /change/; // Change this line
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let result = sample.match(countNonWhiteSpace);
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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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let sample = "Whitespace is important in separating words";
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let countNonWhiteSpace = /\S/g; // Change this line
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let result = sample.match(countNonWhiteSpace);
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```
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</section>
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