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

id	title	challengeType	forumTopicId
587d7db4367417b2b2512b90	Match a Literal String with Different Possibilities	1	301345

Description

Using regexes like /coding/, you can look for the pattern "coding" in another string. This is powerful to search single strings, but it's limited to only one pattern. You can search for multiple patterns using the alternation or OR operator: |. This operator matches patterns either before or after it. For example, if you wanted to match "yes" or "no", the regex you want is /yes|no/. You can also search for more than just two patterns. You can do this by adding more patterns with more OR operators separating them, like /yes|no|maybe/.

Instructions

Complete the regex petRegex to match the pets "dog", "cat", "bird", or "fish".

Tests

tests:
  - text: Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"John has a pet dog."</code>
    testString: assert(petRegex.test('John has a pet dog.'));
  - text: Your regex <code>petRegex</code> should return <code>false</code> for the string <code>"Emma has a pet rock."</code>
    testString: assert(!petRegex.test('Emma has a pet rock.'));
  - text: Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"Emma has a pet bird."</code>
    testString: assert(petRegex.test('Emma has a pet bird.'));
  - text: Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"Liz has a pet cat."</code>
    testString: assert(petRegex.test('Liz has a pet cat.'));
  - text: Your regex <code>petRegex</code> should return <code>false</code> for the string <code>"Kara has a pet dolphin."</code>
    testString: assert(!petRegex.test('Kara has a pet dolphin.'));
  - text: Your regex <code>petRegex</code> should return <code>true</code> for the string <code>"Alice has a pet fish."</code>
    testString: assert(petRegex.test('Alice has a pet fish.'));
  - text: Your regex <code>petRegex</code> should return <code>false</code> for the string <code>"Jimmy has a pet computer."</code>
    testString: assert(!petRegex.test('Jimmy has a pet computer.'));

Challenge Seed

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

Solution

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