freeCodeCamp/match-single-characters-not-specified.english.md at 5294936667c99c461a9d8de75b3ad89e75795cd6

SomeDer bfa5c26288 fix: use dfn instead of code tag (#36640 )

* Use dfn tags

* remove misused <dfn> tags

* Revert "remove misused <dfn> tags"

This reverts commit b24968a96810f618d831410ac90a0bc452ebde50.

* Update curriculum/challenges/english/01-responsive-web-design/basic-html-and-html5/fill-in-the-blank-with-placeholder-text.english.md

Co-Authored-By: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* Make "array" lowercase

Co-Authored-By: Randell Dawson <5313213+RandellDawson@users.noreply.github.com>

* Fix dfn usage

* Address last dfn tags

2019-10-27 12:45:37 -04:00

1.9 KiB

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id, title, challengeType, forumTopicId

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

1.9 KiB Raw Blame History