64 lines
3.9 KiB
Markdown
64 lines
3.9 KiB
Markdown
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---
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id: 587d7db4367417b2b2512b90
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title: Match a Literal String with Different Possibilities
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challengeType: 1
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videoUrl: ''
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localeTitle: 匹配具有不同可能性的文字字符串
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---
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## Description
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<section id="description">使用<code>/coding/</code>等正则表达式，可以在另一个字符串中查找<code>"coding"</code>模式。这对搜索单个字符串很有用，但它仅限于一种模式。您可以使用<code>alternation</code>或<code>OR</code>运算符搜索多个模式： <code>|</code> 。此运算符在其之前或之后匹配模式。例如，如果你想匹配<code>"yes"</code>或<code>"no"</code> ，你想要的正则表达式是<code>/yes|no/</code> 。您还可以搜索两种以上的模式。您可以通过添加更多模式来实现此操作，其中更多<code>OR</code>运算符将它们分开，例如<code>/yes|no|maybe/</code> 。 </section>
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## Instructions
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<section id="instructions">完成正则表达式<code>petRegex</code>以匹配宠物<code>"dog"</code> ， <code>"cat"</code> ， <code>"bird"</code>或<code>"fish"</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: 你的正则表达式<code>petRegex</code>应该为字符串<code>"John has a pet dog."</code>返回<code>true</code> <code>"John has a pet dog."</code>
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testString: 'assert(petRegex.test("John has a pet dog."), "Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"John has a pet dog."</code>");'
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- text: 你的正则表达式<code>petRegex</code>应该为字符串<code>"Emma has a pet rock."</code>返回<code>false</code> <code>"Emma has a pet rock."</code>
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testString: 'assert(!petRegex.test("Emma has a pet rock."), "Your regex <code>petRegex</code> should return <code>false</code> for the string <code>"Emma has a pet rock."</code>");'
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- text: 你的正则表达式<code>petRegex</code>应该为字符串<code>"Emma has a pet bird."</code>返回<code>true</code> <code>"Emma has a pet bird."</code>
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testString: 'assert(petRegex.test("Emma has a pet bird."), "Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"Emma has a pet bird."</code>");'
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- text: 你的正则表达式<code>petRegex</code>应该返回<code>true</code>为字符串<code>"Liz has a pet cat."</code>
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testString: 'assert(petRegex.test("Liz has a pet cat."), "Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"Liz has a pet cat."</code>");'
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- text: 你的正则表达式<code>petRegex</code>应该返回<code>false</code>为<code>"Kara has a pet dolphin."</code>的字符串<code>"Kara has a pet dolphin."</code>
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testString: 'assert(!petRegex.test("Kara has a pet dolphin."), "Your regex <code>petRegex</code> should return <code>false</code> for the string <code>"Kara has a pet dolphin."</code>");'
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- text: 你的正则表达式<code>petRegex</code>应该返回<code>true</code>为字符串<code>"Alice has a pet fish."</code>
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testString: 'assert(petRegex.test("Alice has a pet fish."), "Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"Alice has a pet fish."</code>");'
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- text: 你的正则表达式<code>petRegex</code>应该返回<code>false</code>为字符串<code>"Jimmy has a pet computer."</code>
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testString: 'assert(!petRegex.test("Jimmy has a pet computer."), "Your regex <code>petRegex</code> should return <code>false</code> for the string <code>"Jimmy has a pet computer."</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 petString = "James has a pet cat.";
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let petRegex = /change/; // Change this line
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let result = petRegex.test(petString);
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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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