PerformanceLongAnimationFrameTiming: renderStart property

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The renderStart read-only property of the PerformanceLongAnimationFrameTiming interface returns a DOMHighResTimeStamp indicating the start time of the rendering cycle, which includes Window.requestAnimationFrame() callbacks, style and layout calculation, ResizeObserver callbacks, and IntersectionObserver callbacks.