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conformance · v145
v145 · customizable-select-listbox — conformance probe
10 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.
0
pass
0
fail
0
blocked
10
total
| id | contract | kind | verdict | detail |
|---|---|---|---|---|
select-element-exists |
HTMLSelectElement is exposed — the foundation customizable listbox extends. | exists | … | |
select-multiple-supported |
The HTML multiple attribute on <select> is reflected as a property, the opt-in for multi-select listbox rendering. | script | … | |
select-size-supported |
The HTML size attribute on <select> is reflected as a number property, the other opt-in to listbox rendering. | script | … | |
appearance-base-select-supported |
appearance: base-select is supported in CSS — the toggle that activates the customizable listbox UI. spec ↗ | css-supports | … | |
option-element-exists |
HTMLOptionElement is exposed — listbox renders its options through this interface. | exists | … | |
option-selected-roundtrip |
Setting selected on an option round-trips — the basic state mechanic listbox depends on for selection rendering. | script | … | |
multi-listbox-shape-is-multiple-size-greater-than-one |
The Chrome 145 customizable listbox path can be expressed as a multiple select with a visible size greater than one. spec ↗ | script | … | |
single-listbox-shape-is-size-greater-than-one |
The Chrome 145 customizable listbox path also includes single-select listboxes created with size greater than one. spec ↗ | script | … | |
multi-popup-shape-is-multiple-size-one |
A multiple select with size=1 is the multi-select popup shape, which ChromeStatus says is outside this Chrome 145 listbox feature. spec ↗ | script | … | |
option-rich-markup-is-retained-in-dom |
Rich child markup inside option remains in the DOM for customizable select listbox rendering. spec ↗ | script | … |