/Web APIs

AnimationPlaybackEvent: currentTime property

The currentTime read-only property of the AnimationPlaybackEvent interface represents the current time of the animation that generated the event at the moment the event is queued. This will be unresolved if the animation was idle at the time the event was generated.


A number representing the current time in milliseconds, or null.

Reduced time precision

To offer protection against timing attacks and fingerprinting, the precision of playbackEvent.currentTime might get rounded depending on browser settings. In Firefox, the privacy.reduceTimerPrecision preference is enabled by default and defaults to 20 µs in Firefox 59; in 60, it will be 2 ms.


// reduced time precision (2ms) in Firefox 60
// 23.404
// 24.192
// 25.514
// …

// reduced time precision with `privacy.resistFingerprinting` enabled
// 49.8
// 50.6
// 51.7
// …

In Firefox, you can also enabled privacy.resistFingerprinting, the precision will be 100ms or the value of privacy.resistFingerprinting.reduceTimerPrecision.microseconds, whichever is larger.


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
currentTime 84 84 63 No 70 13.1 84 84 63 60 13.4 14.0

See also

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