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conformance · v133

v133 · dom-state-preserving-move — 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://github.com/whatwg/dom/pull/1307 chromestatus: #5135990159835136 generated 2026-06-01T08:12:59Z by conformance-author-v1-subagent
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id contract kind verdict detail
node-movebefore-method Node.prototype exposes the moveBefore method for state-preserving moves. spec ↗ script
node-movebefore-is-function moveBefore is callable. script
movebefore-relocates-without-removal moveBefore relocates a node within its parent without firing connected/disconnected callbacks; node order changes accordingly. spec ↗ script
movebefore-preserves-iframe-document After moveBefore across parents within the same document, an <iframe>'s content document remains the same Document instance. script
movebefore-throws-cross-document moveBefore throws when the node and the new parent are in different documents. throws