← back to v148 · long-animation-frames-style-duration
conformance · v148
v148 · long-animation-frames-style-duration — 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.
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pass
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fail
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blocked
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| id | contract | kind | verdict | detail |
|---|---|---|---|---|
supported-entry-types-long-animation-frame |
'long-animation-frame' remains a recognised PerformanceObserver entry type. spec ↗ | script | … | |
long-animation-frame-class-exists |
PerformanceLongAnimationFrameTiming is exposed. | exists | … | |
style-duration-on-prototype |
styleDuration is defined on PerformanceLongAnimationFrameTiming.prototype. spec ↗ | script | … | |
forced-style-duration-on-prototype |
forcedStyleDuration is defined on PerformanceLongAnimationFrameTiming.prototype. spec ↗ | script | … | |
performance-observer-observe-loaf |
PerformanceObserver.observe({type:'long-animation-frame'}) is accepted by the API. | script | … |