freeCodeCamp/curriculum/challenges/chinese/02-javascript-algorithms-and-data-structures/regular-expressions/match-a-literal-string-with-different-possibilities.chinese.md

id, title, challengeType, videoUrl, localeTitle

id	title	challengeType	videoUrl	localeTitle
587d7db4367417b2b2512b90	Match a Literal String with Different Possibilities	1		匹配具有不同可能性的文字字符串

Description

使用/coding/等正则表达式，可以在另一个字符串中查找"coding"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alternation或OR运算符搜索多个模式： | 。此运算符在其之前或之后匹配模式。例如，如果你想匹配"yes"或"no" ，你想要的正则表达式是/yes|no/ 。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OR运算符将它们分开，例如/yes|no|maybe/ 。

Instructions

完成正则表达式petRegex以匹配宠物"dog" ， "cat" ， "bird"或"fish" 。

Tests

tests:
  - text: 你的正则表达式<code>petRegex</code>应该为字符串<code>&quot;John has a pet dog.&quot;</code>返回<code>true</code> <code>&quot;John has a pet dog.&quot;</code>
    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>");'
  - text: 你的正则表达式<code>petRegex</code>应该为字符串<code>&quot;Emma has a pet rock.&quot;</code>返回<code>false</code> <code>&quot;Emma has a pet rock.&quot;</code>
    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>");'
  - text: 你的正则表达式<code>petRegex</code>应该为字符串<code>&quot;Emma has a pet bird.&quot;</code>返回<code>true</code> <code>&quot;Emma has a pet bird.&quot;</code>
    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>");'
  - text: 你的正则表达式<code>petRegex</code>应该返回<code>true</code>为字符串<code>&quot;Liz has a pet cat.&quot;</code>
    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>");'
  - text: 你的正则表达式<code>petRegex</code>应该返回<code>false</code>为<code>&quot;Kara has a pet dolphin.&quot;</code>的字符串<code>&quot;Kara has a pet dolphin.&quot;</code>
    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>");'
  - text: 你的正则表达式<code>petRegex</code>应该返回<code>true</code>为字符串<code>&quot;Alice has a pet fish.&quot;</code>
    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>");'
  - text: 你的正则表达式<code>petRegex</code>应该返回<code>false</code>为字符串<code>&quot;Jimmy has a pet computer.&quot;</code>
    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>");'

Challenge Seed

let petString = "James has a pet cat.";
let petRegex = /change/; // Change this line
let result = petRegex.test(petString);

Solution

// solution required