Interface LongAnimationFrameEntry

One frame reported by the Long Animation Frames API.

interface LongAnimationFrameEntry {
    blockingDuration: number;
    duration: number;
    firstUIEventTimestamp: number;
    renderStart: number;
    scripts: LongAnimationFrameScript[];
    startTime: number;
    styleAndLayoutStart: number;
    timestamp: number;
}

Properties

blockingDuration: number

Time in milliseconds the frame blocked input beyond 50 ms of each long task in it.

duration: number

Frame duration in milliseconds.

firstUIEventTimestamp: number

Time of the first UI event handled in the frame, or 0 when none.

renderStart: number

When the rendering phase started, in milliseconds since the time origin, or 0 without one.

The longest scripts that ran in the frame, longest first, at most five.

startTime: number

Frame start, in milliseconds since the page's time origin.

styleAndLayoutStart: number

When style and layout started, in milliseconds since the time origin, or 0 without one.

timestamp: number

Wall-clock time when the frame ended, in milliseconds since the Unix epoch.