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conformance · v150

v150 · clone-into-all-descendant-selectedcontent-elements — conformance probe

7 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#the-selectedcontent-element chromestatus: #5863985044914176 generated 2026-06-02T13:54:51Z by manual-goal-setting
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id contract kind verdict detail
html-selectedcontent-interface HTMLSelectedContentElement is exposed for native customizable select selectedcontent elements. exists
selectedcontent-uses-native-interface document.createElement('selectedcontent') creates an HTMLSelectedContentElement instance rather than an unknown element. script
base-select-appearance-support Customizable select styling uses the base-select appearance keyword. css-supports
parser-preserves-multiple-descendant-selectedcontent The parser preserves multiple selectedcontent descendants inside the select button subtree. script
all-descendant-selectedcontent-receive-selected-option-clone Chrome 150 clones the selected option into every descendant selectedcontent element, not only the first one in DOM order. script
selectedcontent-clone-updates-after-selection-change After the selected value changes, every descendant selectedcontent element reflects the newly selected option. script
select-options-collection-remains-live HTMLSelectElement.options remains a live HTMLOptionsCollection; the selectedcontent clone behavior does not change legacy select APIs. script