← back to v145 · container-timing
conformance · v145
v145 · container-timing — 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.
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pass
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fail
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blocked
6
total
| id | contract | kind | verdict | detail |
|---|---|---|---|---|
performance-observer-exists |
PerformanceObserver is the entry point — Container Timing entries are observed through it. | exists | … | |
container-entry-type-supported |
PerformanceObserver.supportedEntryTypes is the feature-detection list that will contain 'container' when Container Timing is exposed. spec ↗ | script | … | |
performance-container-timing-interface |
PerformanceContainerTiming is exposed when the 'container' entry type is advertised. spec ↗ | script | … | |
container-timing-name-attribute |
PerformanceContainerTiming.prototype exposes the name attribute when the interface is present. spec ↗ | script | … | |
container-timing-identifier-attribute |
PerformanceContainerTiming.prototype exposes the identifier attribute when the interface is present. spec ↗ | script | … | |
observer-can-subscribe-container |
PerformanceObserver.observe accepts type: 'container' without throwing — Chrome 145 ships the observer registration path. spec ↗ | script | … |