DOMStringList: contains() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

Note: This feature is available in Web Workers.

The contains() method returns a boolean indicating whether the given string is in the list.

Syntax

js
contains(string)

Parameters

string

A string you want to check for the existence of in the list.

Return value

A boolean indicating whether the given string is in the list.

Exceptions

TypeError

Thrown if no argument is provided.

Specifications

Specification
HTML Standard
# dom-domstringlist-contains

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
contains

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support