JavaScript: Regex Functions

By Xah Lee. Date: 2013-10-24. Last updated: 2022-02-20.

Here is a overview of regex functions. (For a basic intro to regex, see RegExp Tutorial)

str.search(regex): Return the position of the match. [see String.prototype.search]
str.match(regex): Return a Array of captured groups, or all occurrences. [see String.prototype.match]
str.matchAll(regex): Return a Iterable Object of all occurrences and captures. [see String.prototype.matchAll]
str.replace(regex, str_or_func): Return a new string. [see String.prototype.replace]
str.replaceAll(regex, str_or_func): Return a new string. [see String.prototype.replaceAll]
regex.test(str): Return true/false. [see RegExp.prototype.test]
regex.exec(str): Return captured groups. [see RegExp.prototype.exec]