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

The AnimationEvent.elapsedTime read-only property is a float giving the amount of time the animation has been running, in seconds, when this event fired, excluding any time the animation was paused. For an animationstart event, elapsedTime is 0.0 unless there was a negative value for animation-delay, in which case the event will be fired with elapsedTime containing (-1 * delay).


time = AnimationEvent.elapsedTime


CSS Animations Level 2 (CSS Animations 2)
# dom-animationevent-elapsedtime

Browser compatibility

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See also