Animation: currentTime property

Baseline 2022

Newly available

Since September 2022, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.

The Animation.currentTime property of the Web Animations API returns and sets the current time value of the animation in milliseconds, whether running or paused.

If the animation lacks a timeline, is inactive, or hasn't been played yet, currentTime's return value is null.


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


In the Drink Me/Eat Me game, Alice's height is animated so it can go from small to large or large to small. At the start of the game, her height is set between the two extremes by setting her animation's currentTime to half her KeyframeEffect's duration:

aliceChange.currentTime = aliceChange.effect.timing.duration / 2;

A more generic means of seeking to the 50% mark of an animation would be:

animation.currentTime =
  animation.effect.getComputedTiming().delay +
  animation.effect.getComputedTiming().activeDuration / 2;

Reduced time precision

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

// 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.


Web Animations
# dom-animation-currenttime

Browser compatibility

BCD tables only load in the browser

See also