freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-an.../regular-expressions/find-more-than-the-first-ma...

1.6 KiB

id title challengeType forumTopicId dashedName
587d7db4367417b2b2512b93 Find More Than the First Match 1 301342 find-more-than-the-first-match

--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);

Here match would return ["Repeat"].

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

let repeatRegex = /Repeat/g;
testStr.match(repeatRegex);

And here match returns the value ["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

--hints--

Your regex starRegex should use the global flag g

assert(starRegex.flags.match(/g/).length == 1);

Your regex starRegex should use the case insensitive flag i

assert(starRegex.flags.match(/i/).length == 1);

Your match should match both occurrences of the word Twinkle

assert(
  result.sort().join() ==
    twinkleStar
      .match(/twinkle/gi)
      .sort()
      .join()
);

Your match result should have two elements in it.

assert(result.length == 2);

--seed--

--seed-contents--

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

--solutions--

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