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
CustomStateSetobject.
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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