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>
78 lines
1.8 KiB
Markdown
78 lines
1.8 KiB
Markdown
---
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id: 587d7db8367417b2b2512ba3
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title: 匹配空白字符
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challengeType: 1
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forumTopicId: 301359
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dashedName: match-whitespace
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---
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# --description--
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迄今为止的挑战包括匹配的字母和数字。还可以匹配字母之间的空格。
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可以使用`\s`搜寻空格，其中`s`是小写。此匹配模式不仅匹配空格，还匹配回车符、制表符、换页符和换行符，可以将其视为与`[\r\t\f\n\v]`类似。
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```js
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let whiteSpace = "Whitespace. Whitespace everywhere!"
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let spaceRegex = /\s/g;
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whiteSpace.match(spaceRegex);
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// Returns [" ", " "]
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```
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# --instructions--
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修改正则表达式`countWhiteSpace`查找字符串中的多个空白字符。
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# --hints--
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你的正则表达式应该使用全局状态修正符。
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```js
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assert(countWhiteSpace.global);
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```
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正则表达式应该使用元字符 `\s` 匹配所有的空白。
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```js
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assert(/\\s/.test(countWhiteSpace.source));
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```
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你的正则表达式应该在`'Men are from Mars and women are from Venus.'`中匹配到 8 个空白字符。
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```js
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assert(
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'Men are from Mars and women are from Venus.'.match(countWhiteSpace).length ==
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8
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);
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```
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你的正则表达式应该在`"Space: the final frontier."`中匹配到 3 个空白字符。
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```js
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assert('Space: the final frontier.'.match(countWhiteSpace).length == 3);
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```
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你的正则表达式在`'MindYourPersonalSpace'`中应该匹配不到空白字符。
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```js
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assert('MindYourPersonalSpace'.match(countWhiteSpace) == null);
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```
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# --seed--
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## --seed-contents--
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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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# --solutions--
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```js
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let sample = "Whitespace is important in separating words";
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let countWhiteSpace = /\s/g;
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let result = sample.match(countWhiteSpace);
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```
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