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Firefox 142 Nightly adds :active-view-transition pseudo-class#27315

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caugner merged 6 commits into
mdn:mainfrom
dletorey:40029-active-view-transition
Jul 17, 2025
Merged

Firefox 142 Nightly adds :active-view-transition pseudo-class#27315
caugner merged 6 commits into
mdn:mainfrom
dletorey:40029-active-view-transition

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@dletorey

@dletorey dletorey commented Jul 17, 2025

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Summary

  • Added Firefox Nightly support for:
    • :active-view-transition pseudo-class
    • Document.startViewTransition method

Test results and supporting details

Tested using this codepen in the following browsers:

  • Firefox 140.0.4 - not supported
  • Firefox Beta 141.0 - not supported
  • Firefox Developer 141.0b9 - not supported
  • Firefox Nightly 142.0a1 - supported

Related issues

@github-actions github-actions Bot added data:api Compat data for Web APIs. https://developer.mozilla.org/docs/Web/API data:css Compat data for CSS features. https://developer.mozilla.org/docs/Web/CSS size:s [PR only] 7-24 LoC changed labels Jul 17, 2025
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github-actions Bot commented Jul 17, 2025

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Tip: Review these changes grouped by change (recommended for most PRs), or grouped by feature (for large PRs).

@caugner caugner changed the title Added Firefox support for :active-view-transition pseudo-class Firefox 142 Nightly adds :active-view-transition pseudo-class Jul 17, 2025

@caugner caugner left a comment

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LGTM, just one nit: We usually remove the impl_url once it is resolved.

Comment thread api/Document.json Outdated
Comment thread api/Document.json Outdated
Comment thread api/Document.json Outdated
Comment thread css/selectors/active-view-transition.json Outdated
@caugner caugner enabled auto-merge (squash) July 17, 2025 17:02
@caugner caugner merged commit d7bf8c3 into mdn:main Jul 17, 2025
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data:api Compat data for Web APIs. https://developer.mozilla.org/docs/Web/API data:css Compat data for CSS features. https://developer.mozilla.org/docs/Web/CSS size:s [PR only] 7-24 LoC changed

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2 participants