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conformance · v144

v144 · interoperable-pointer-and-mouse-boundary-events-after-dom-changes — conformance probe

4 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://www.w3.org/TR/uievents/#events-mouseevent-event-order chromestatus: #6266812908175360 generated 2026-06-01T08:03:56Z by conformance-author-v1-subagent
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id contract kind verdict detail
pointer-event-exists PointerEvent is exposed; boundary semantics are tested via dispatched events. spec ↗ exists
mouseevent-relatedtarget-supported MouseEvent.relatedTarget is in the prototype — boundary events use it to identify the new logical target. spec ↗ script
pointerleave-event-supported pointerleave is a registered event handler attribute on elements. spec ↗ script
pointerout-bubbles-after-detach After a child target is removed mid-interaction, pointerout dispatched before detach still bubbles to the ancestor (the new logical target). spec ↗ script