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Container Timing API draft - #45564

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hamishwillee:ff156_performancecontainertiming
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Container Timing API draft#45564
hamishwillee wants to merge 1 commit into
mdn:mainfrom
hamishwillee:ff156_performancecontainertiming

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@hamishwillee

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FF156 adds support for the performance container timing API behind a flag.

This add docs for the following the normal Performance API approach (a bit different from other APIs). The interface PerformanceContainerTiming appears on the API page and contains the concepts section.

TBD - claude created but need good review

  • PerformanceContainerTiming interface page
  • PerformanceContainerTiming.rootElement
  • The HTML atttributes and properties (4)
  • Experimental features

Related docs work can be tracked in #45428

@github-actions github-actions Bot added Content:HTML Hypertext Markup Language docs Content:WebAPI Web API docs Content:Firefox Content in the Mozilla/Firefox subtree labels Sep 8, 2026
@github-actions github-actions Bot added the size/xl [PR only] >1000 LoC changed label Sep 8, 2026
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github-actions Bot commented Sep 8, 2026

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Preview URLs (21 pages)
External URLs (4)

URL: /en-US/docs/Mozilla/Firefox/Experimental_features
Title: Experimental features in Firefox


URL: /en-US/docs/Mozilla/Firefox/Releases/156
Title: Firefox 156 release notes for developers (Beta)

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Content:Firefox Content in the Mozilla/Firefox subtree Content:HTML Hypertext Markup Language docs Content:WebAPI Web API docs size/xl [PR only] >1000 LoC changed

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