Web platform features explorer - :state()

Web platform features explorer

The :state() CSS pseudo-class matches custom elements based on their custom state, set through the ElementInternals.states API.

Status

Baseline Newly Available (since 2024-05-17)

This feature is expected to reach Baseline Widely Available status on: 2026-11-17

MDN documentation

:state()

Specifications

HTML (#custom-state-pseudo-class), from HTML Workstream (WHATWG).

Browser support

Chrome 125 Released on 2024-05-14
Chrome Android 125 Released on 2024-05-14
Edge 125 Released on 2024-05-17
Firefox 126 Released on 2024-05-14
Firefox for Android 126 Released on 2024-05-14
Safari 17.4 Released on 2024-03-05
Safari on iOS 17.4 Released on 2024-03-05

Usage (according to Chrome Platform Status)

~0.246% of page loads. More data at chromestatus.

Web Platform Tests (WPT)

View the latest WPT test results for this feature

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