--- id: 587d7db7367417b2b2512b9e title: Match Ending String Patterns challengeType: 1 videoUrl: '' localeTitle: 匹配结束字符串模式 --- ## Description
在上一个挑战中,您学会了使用caret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dollar sign字符$来搜索字符串的结尾。
让theEnding =“这是一个永无止境的故事”;
让storyRegex = / story $ /;
storyRegex.test(theEnding);
//返回true
让noEnding =“有时故事必须结束”;
storyRegex.test(noEnding);
//返回false
## Instructions
使用锚字符( $ )来匹配字符串"caboose"在字符串的结尾caboose
## Tests
```yml tests: - text: 您应该在正则表达式中使用美元符号$ anchor搜索"caboose" 。 testString: assert(lastRegex.source == "caboose$"); - text: 你的正则表达式不应该使用任何标志。 testString: assert(lastRegex.flags == ""); - text: 您应该在字符串末尾匹配"caboose" "The last car on a train is the caboose" testString: assert(lastRegex.test("The last car on a train is the caboose")); ```
## Challenge Seed
```js let caboose = "The last car on a train is the caboose"; let lastRegex = /change/; // Change this line let result = lastRegex.test(caboose); ```
## Solution
```js // solution required ```