Intent to ship: onmessage content attribute on the body and frameset elements.

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Frédéric Wang

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Jan 30, 2025, 3:24:01 AMJan 30
to dev-pl...@mozilla.org

Hello,

As of Feb 6, I intend to enable support for the onmessage content attribute on the body and frameset elements.

Summary: Make possible to register an handler on body/frameset elements for the "message" event using a content attribute onmessage="handler()".
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1944504
Specification:
https://html.spec.whatwg.org/multipage/sections.html#the-body-element
https://html.spec.whatwg.org/multipage/obsolete.html#frameset
https://html.spec.whatwg.org/multipage/webappapis.html#handler-window-onmessage
Standards Body: WHATWG
Platform coverage: All
Preference: N/A
DevTools bug: N/A
Link to standards-positions discussion: N/A
Other browsers:
  Blink: Shipped
  WebKit: Shipped
web-platform-tests: html/webappapis/scripting/events/event-handler-attributes-body-window.html, html/webappapis/scripting/events/event-handler-attributes-frameset-window.html

Frederik Braun

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Jan 30, 2025, 3:52:17 AMJan 30
to Frédéric Wang, dev-pl...@mozilla.org
Thanks for cleaning up these inconsistencies :-)


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