freeCodeCamp/curriculum/challenges/english/02-javascript-algorithms-and-data-structures/regular-expressions/match-single-characters-not-specified.english.md

id	title	challengeType	forumTopicId
587d7db6367417b2b2512b98	Match Single Characters Not Specified	1	301358

Description

So far, you have created a set of characters that you want to match, but you could also create a set of characters that you do not want to match. These types of character sets are called negated character sets. To create a negated character set, you place a caret character (^) after the opening bracket and before the characters you do not want to match. For example, /[^aeiou]/gi matches all characters that are not a vowel. Note that characters like ., !, [, @, / and white space are matched - the negated vowel character set only excludes the vowel characters.

Instructions

Create a single regex that matches all characters that are not a number or a vowel. Remember to include the appropriate flags in the regex.

Tests

tests:
  - text: Your regex <code>myRegex</code> should match 9 items.
    testString: assert(result.length == 9);
  - text: Your regex <code>myRegex</code> should use the global flag.
    testString: assert(myRegex.flags.match(/g/).length == 1);
  - text: Your regex <code>myRegex</code> should use the case insensitive flag.
    testString: assert(myRegex.flags.match(/i/).length == 1);

Challenge Seed

let quoteSample = "3 blind mice.";
let myRegex = /change/; // Change this line
let result = myRegex; // Change this line

Solution

let quoteSample = "3 blind mice.";
let myRegex = /[^0-9aeiou]/gi; // Change this line
let result = quoteSample.match(myRegex); // Change this line