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conformance · v135

v135 · element-reflection — conformance probe

5 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://html.spec.whatwg.org/multipage/common-dom-interfaces.html#reflecting-content-attributes-in-idl-attributes chromestatus: #6244885579431936 generated 2026-06-01T09:13:00Z by conformance-author-v1-subagent
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id contract kind verdict detail
aria-active-descendant-element-reflects ariaActiveDescendantElement is exposed on Element.prototype — reflects aria-activedescendant as an Element. spec ↗ script
aria-controls-elements-reflects ariaControlsElements is exposed — FrozenArray reflection of aria-controls. spec ↗ script
aria-labelled-by-elements-reflects ariaLabelledByElements is exposed — reflection of aria-labelledby. spec ↗ script
set-reflected-element-without-attribute Setting ariaActiveDescendantElement to an Element reference works without setting the corresponding ID attribute. spec ↗ script
popovertarget-element-reflects-on-button popoverTargetElement on HTMLButtonElement.prototype reflects popovertarget as an Element. spec ↗ script