Intent to Prototype: Element's matchContainer()
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Chromestatus
Apr 9, 2026, 2:46:39 AM (14 days ago)
Apr 9
to blin...@chromium.org, re...@igalia.com, seo...@chromium.org, seo...@igalia.com
Contact emails
seo...@chromium.org
, seo...@igalia.com
Explainer
https://github.com/w3c/csswg-drafts/issues/6205
Specification
https://github.com/w3c/csswg-drafts/pull/13551
Summary
Introduce matchContainer() on Element instances for the container query, that provides a similar mechanism to window.matchMedia(). Blink component
Blink>CSS
Web Feature ID
Missing feature Motivation
CSS Media Queries have a method window.matchMedia(), which gives a script the ability to listen for media query changes. Web Devs proposed that CSS Container Queries have the same functionality.
And then, CSSWG resolved this proposal as "RESOLVED: Add a matchContainer method as proposed in issue. Keep issue open to decide if need new observer or if we can reuse the existing". Initial public proposal
https://github.com/w3c/csswg-drafts/issues/6205
Goals for experimentation
None Requires code in //chrome?
False Tracking bug
https://issues.chromium.org/issues/40887402
Estimated milestones
No milestones specified
Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/5150754462629888?gate=5168567302619136
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