W3cubDocs

/JavaScript

RegExp.prototype.global

The global accessor property of RegExp instances returns whether or not the g flag is used with this regular expression.

Try it

Description

RegExp.prototype.global has the value true if the g flag was used; otherwise, false. The g flag indicates that the regular expression should be tested against all possible matches in a string. Each call to exec() will update its lastIndex property, so that the next call to exec() will start at the next character.

Some methods, such as String.prototype.matchAll() and String.prototype.replaceAll(), will validate that, if the parameter is a regex, it is global. The regex's @@match and @@replace methods (called by String.prototype.match() and String.prototype.replace()) would also have different behaviors when the regex is global.

The set accessor of global is undefined. You cannot change this property directly.

Examples

Using global

js
const regex = /foo/g;
console.log(regex.global); // true

const str = "fooexamplefoo";
const str1 = str.replace(regex, "");
console.log(str1); // example

const regex1 = /foo/;
const str2 = str.replace(regex1, "");
console.log(str2); // examplefoo

Specifications

Browser compatibility

Desktop Mobile Server
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android Deno Node.js
global 1 12 1 5 1 18 4 10.1 1 1.0 4.4 1.0 0.10.0
prototype_accessor 48 12 38 35 1.3 48 38 35 1 5.0 48 1.0 6.0.0

See also

© 2005–2023 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp/global