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>
65 lines
1.3 KiB
Markdown
65 lines
1.3 KiB
Markdown
---
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id: 587d7db4367417b2b2512b92
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title: 提取匹配项
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challengeType: 1
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forumTopicId: 301340
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dashedName: extract-matches
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---
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# --description--
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到目前为止，只是检查了一个匹配模式是否存在于字符串中。还可以使用`.match()`方法来提取找到的实际匹配项。
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可以使用字符串来调用`.match()`方法，并在括号内传入正则表达式。以下是一个示例：
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```js
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"Hello, World!".match(/Hello/);
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// Returns ["Hello"]
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let ourStr = "Regular expressions";
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let ourRegex = /expressions/;
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ourStr.match(ourRegex);
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// Returns ["expressions"]
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```
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# --instructions--
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利用`.match()`方法提取单词`coding`。
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# --hints--
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`结果`应该包含单词`coding`。
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```js
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assert(result.join() === 'coding');
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```
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你的正则表达式`codingRegex`应该搜寻`coding`。
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```js
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assert(codingRegex.source === 'coding');
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```
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你应该使用`.match()`方法。
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```js
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assert(code.match(/\.match\(.*\)/));
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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 extractStr = "Extract the word 'coding' from this string.";
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let codingRegex = /change/; // Change this line
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let result = extractStr; // Change this line
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```
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# --solutions--
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```js
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let extractStr = "Extract the word 'coding' from this string.";
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let codingRegex = /coding/; // Change this line
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let result = extractStr.match(codingRegex); // Change this line
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```
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