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conformance · v149

v149 · popover-hint-behavior-changes — conformance probe

8 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://github.com/whatwg/html/pull/12345 chromestatus: #6282804208992256 generated 2026-06-01T08:03:56Z by conformance-author-v1-subagent
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id contract kind verdict detail
popover-idl-attribute-exists HTMLElement.prototype exposes the `popover` IDL attribute reflecting the popover content attribute. script
popover-hint-value-accepted Setting element.popover='hint' is reflected back; the browser keeps the value rather than coercing it. script
popover-auto-value-accepted Setting element.popover='auto' is reflected back, preserving the stacking peer of the hint type. script
show-popover-method HTMLElement.prototype.showPopover exists as a method for explicit popover invocation. typeof
hide-popover-method HTMLElement.prototype.hidePopover exists. typeof
popover-open-pseudoclass Browsers expose the :popover-open pseudoclass so authors can style open popovers. script
toggle-event-fires-on-hint Showing a popover=hint dispatches a ToggleEvent (the spec-defined notification for popover state). spec ↗ script
toggle-event-constructor ToggleEvent is exposed as a constructor. typeof