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 Standard
# custom-state-pseudo-class

Browser compatibility

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