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conformance · v145

v145 · introducing-the-origin-api — 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://github.com/whatwg/html/pull/11846 chromestatus: #5095541277065216 generated 2026-06-01T08:14:32Z by conformance-author-v1-subagent
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pass
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fail
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blocked
6
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id contract kind verdict detail
origin-interface-exists The Origin interface is exposed on the global — the new structured origin type as opposed to the ASCII serialization. spec ↗ exists
window-origin-getter window.origin still exposes the ASCII serialization (string) — pre-existing behaviour preserved. typeof
location-origin-getter location.origin returns a string serialization of the origin. typeof
origin-is-same-origin Origin.prototype.isSameOrigin is a function — the structured same-origin comparison primitive. spec ↗ script
origin-is-same-site Origin.prototype.isSameSite is a function — the structured same-site comparison primitive. spec ↗ script
self-origin-getter-returns-origin self.origin reads as an Origin instance (or string fallback) — the typed accessor for the current realm's origin. script