JavaScript · Regular expressions

/pattern/ literal

A regular expression literal compiles once and is the fastest way to write a pattern.

javascriptRunnable example javascript course

Syntax

const re = /\d+/g;

Example

Try it

const re = /\d+/g;
console.log("a1b22".match(re));

Reference pages are the quick answer. The course explains the why, shows the full example and ends with a challenge.