56 lines
2.0 KiB
Markdown
56 lines
2.0 KiB
Markdown
---
|
||
id: 587d7db7367417b2b2512b9e
|
||
title: Match Ending String Patterns
|
||
challengeType: 1
|
||
videoUrl: ''
|
||
localeTitle: 匹配结束字符串模式
|
||
---
|
||
|
||
## Description
|
||
<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>
|
||
|
||
## Instructions
|
||
<section id="instructions">使用锚字符（ <code>$</code> ）来匹配字符串<code>"caboose"</code>在字符串的结尾<code>caboose</code> 。 </section>
|
||
|
||
## Tests
|
||
<section id='tests'>
|
||
|
||
```yml
|
||
tests:
|
||
- text: 您应该在正则表达式中使用美元符号<code>$</code> anchor搜索<code>"caboose"</code> 。
|
||
testString: 'assert(lastRegex.source == "caboose$", "You should search for <code>"caboose"</code> with the dollar sign <code>$</code> anchor in your regex.");'
|
||
- text: 你的正则表达式不应该使用任何标志。
|
||
testString: 'assert(lastRegex.flags == "", "Your regex should not use any flags.");'
|
||
- 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>
|
||
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>");'
|
||
|
||
```
|
||
|
||
</section>
|
||
|
||
## Challenge Seed
|
||
<section id='challengeSeed'>
|
||
|
||
<div id='js-seed'>
|
||
|
||
```js
|
||
let caboose = "The last car on a train is the caboose";
|
||
let lastRegex = /change/; // Change this line
|
||
let result = lastRegex.test(caboose);
|
||
|
||
```
|
||
|
||
</div>
|
||
|
||
|
||
|
||
</section>
|
||
|
||
## Solution
|
||
<section id='solution'>
|
||
|
||
```js
|
||
// solution required
|
||
```
|
||
</section>
|