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conformance · v135

v135 · invoker-commands-the-command-and-commandfor-attributes — 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://html.spec.whatwg.org/multipage/form-elements.html#attr-button-commandfor chromestatus: #5142517058371584 generated 2026-06-01T09:35:00Z by conformance-author-v1-subagent
0
pass
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fail
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blocked
6
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id contract kind verdict detail
command-idl-on-button HTMLButtonElement.prototype.command reflects the command content attribute. spec ↗ script
commandfor-idl-on-button HTMLButtonElement.prototype.commandForElement reflects commandfor as an Element. spec ↗ script
command-event-constructor-exists CommandEvent is exposed on the global — the event dispatched at the invoker's target. spec ↗ exists
command-event-has-command-property CommandEvent.prototype.command is exposed. spec ↗ script
command-event-has-source-property CommandEvent.prototype.source returns the invoking element. spec ↗ script
commandfor-roundtrips Setting commandForElement on a button assigns the target without requiring an id. spec ↗ script