56 lines
2.0 KiB
Markdown
56 lines
2.0 KiB
Markdown
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---
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id: 587d7db7367417b2b2512b9e
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title: Match Ending String Patterns
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challengeType: 1
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videoUrl: ''
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localeTitle: 匹配结束字符串模式
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---
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## Description
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<section id="description">在上一个挑战中，您学会了使用<code>caret</code>来搜索字符串开头的模式。还有一种方法可以在字符串末尾搜索模式。您可以使用正则表达式末尾的<code>dollar sign</code>字符<code>$</code>来搜索字符串的结尾。 <blockquote>让theEnding =“这是一个永无止境的故事”; <br>让storyRegex = / story $ /; <br> storyRegex.test（theEnding）; <br> //返回true <br>让noEnding =“有时故事必须结束”; <br> storyRegex.test（noEnding）; <br> //返回false <br></blockquote></section>
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## Instructions
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<section id="instructions">使用锚字符（ <code>$</code> ）来匹配字符串<code>"caboose"</code>在字符串的结尾<code>caboose</code> 。 </section>
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## Tests
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<section id='tests'>
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```yml
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tests:
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- text: 您应该在正则表达式中使用美元符号<code>$</code> anchor搜索<code>"caboose"</code> 。
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testString: 'assert(lastRegex.source == "caboose$", "You should search for <code>"caboose"</code> with the dollar sign <code>$</code> anchor in your regex.");'
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- text: 你的正则表达式不应该使用任何标志。
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testString: 'assert(lastRegex.flags == "", "Your regex should not use any flags.");'
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- text: 您应该在字符串末尾匹配<code>"caboose"</code> <code>"The last car on a train is the caboose"</code>
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testString: 'assert(lastRegex.test("The last car on a train is the caboose"), "You should match <code>"caboose"</code> at the end of the string <code>"The last car on a train is the caboose"</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 caboose = "The last car on a train is the caboose";
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let lastRegex = /change/; // Change this line
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let result = lastRegex.test(caboose);
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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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