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conformance · v134

v134 · dialog-light-dismiss — 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/#attr-dialog-closedby chromestatus: #5097714453577728 generated 2026-06-01T08:30:00Z by conformance-author-v1-subagent
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id contract kind verdict detail
dialog-closedby-idl HTMLDialogElement exposes a closedBy IDL attribute reflecting the closedby content attribute. exists
dialog-closedby-any-roundtrip Setting closedBy='any' reflects to the content attribute (light-dismiss enabled). script
dialog-closedby-closerequest closedBy accepts 'closerequest' (Esc / OS close request only). script
dialog-closedby-none closedBy accepts 'none' to disable Esc and light dismiss entirely (modal stays put). script
dialog-closedby-invalid-defaults Invalid values are reflected back through the IDL getter as one of the canonical states. script
close-watcher-exists CloseWatcher is exposed — it is the close-request primitive that backs closedBy. exists