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.
has(value)
valueThe value to test for in the CustomStateSet object.
A Boolean, true if value exists in the CustomStateSet.
| Specification |
|---|
| HTML> # custom-state-pseudo-class> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
has |
90 | 90 | 126 | 76 | 17.4 | 90 | 126 | 64 | 17.4 | 15.0 | 90 | 17.4 |
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/CustomStateSet/has