CustomStateSet: has() method

Baseline 2024
Newly available

Since May 2024, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The has() method of the CustomStateSet interface returns a Boolean asserting whether an element is present with the given value.

Syntax

js
has(value)

Parameters

value

The value to test for in the CustomStateSet object.

Return value

A Boolean, true if value exists in the CustomStateSet.

Specifications

Specification
HTML
# custom-state-pseudo-class

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
has

Legend

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Full support
Full support