freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/regular-expressions/find-more-than-the-first-match.english.md

id, title, challengeType

id	title	challengeType
587d7db4367417b2b2512b93	Find More Than the First Match	1

Description

So far, you have only been able to extract or search a pattern once.

let testStr = "Repeat, Repeat, Repeat";
let ourRegex = /Repeat/;
testStr.match(ourRegex);
// Returns ["Repeat"]

To search or extract a pattern more than once, you can use the g flag.

let repeatRegex = /Repeat/g;
testStr.match(repeatRegex);
// Returns ["Repeat", "Repeat", "Repeat"]

Instructions

Using the regex starRegex, find and extract both "Twinkle" words from the string twinkleStar. Note
You can have multiple flags on your regex like /search/gi

Tests

tests:
  - text: Your regex <code>starRegex</code> should use the global flag <code>g</code>
    testString: assert(starRegex.flags.match(/g/).length == 1, 'Your regex <code>starRegex</code> should use the global flag <code>g</code>');
  - text: Your regex <code>starRegex</code> should use the case insensitive flag <code>i</code>
    testString: assert(starRegex.flags.match(/i/).length == 1, 'Your regex <code>starRegex</code> should use the case insensitive flag <code>i</code>');
  - text: Your match should match both occurrences of the word <code>"Twinkle"</code>
    testString: assert(result.sort().join() == twinkleStar.match(/twinkle/gi).sort().join(), 'Your match should match both occurrences of the word <code>"Twinkle"</code>');
  - text: Your match <code>result</code> should have two elements in it.
    testString: assert(result.length == 2, 'Your match <code>result</code> should have two elements in it.');

Challenge Seed

let twinkleStar = "Twinkle, twinkle, little star";
let starRegex = /change/; // Change this line
let result = twinkleStar; // Change this line

Solution

let twinkleStar = "Twinkle, twinkle, little star";
let starRegex = /twinkle/gi;
let result = twinkleStar.match(starRegex);