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conformance · v145

v145 · expose-onanimationcancel-event-to-globaleventhandlers — conformance probe

6 assertions drawn from the spec. Each is a single contract the spec text makes. Pass/fail reflects what this browser executed; blocked means the contract was not run because it needs user mediation, hardware, or another unavailable precondition. Open the page in Chrome stable / canary / Firefox / Safari to compare.

browser: spec: https://drafts.csswg.org/css-animations/#interface-globaleventhandlers chromestatus: #5160464445210624 generated 2026-06-01T08:14:32Z by conformance-author-v1-subagent
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id contract kind verdict detail
onanimationcancel-on-window Window.prototype exposes the onanimationcancel IDL attribute — the new GlobalEventHandlers entry. spec ↗ script
onanimationcancel-on-htmlelement HTMLElement.prototype exposes onanimationcancel — the property bubbles through GlobalEventHandlers. spec ↗ script
animation-end-event-still-exists The pre-existing onanimationend handler still exists — the cancel handler is additive, not a replacement. script
animation-start-event-still-exists The pre-existing onanimationstart handler still exists. script
animation-iteration-event-still-exists The pre-existing onanimationiteration handler still exists. script
animation-event-interface-exists AnimationEvent is exposed — the event type fired for animationcancel. exists