Web/API/AnimationTimeline/currentTime

This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.

The currentTime read-only property of the Web Animations API's AnimationTimeline interface returns the timeline's current time in milliseconds, or null if the timeline is inactive.

Syntax

var currentTime = AnimationTimeline.currentTime;

Value

A number representing the timeline's current time in milliseconds, or null if the timeline is inactive.

Reduced time precision

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

// reduced time precision (2ms) in Firefox 60
animationTimeline.currentTime;
// 23.404
// 24.192
// 25.514
// ...


// reduced time precision with `privacy.resistFingerprinting` enabled
animationTimeline.currentTime;
// 49.8
// 50.6
// 51.7
// ...

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

Specifications

Specification	Status	Comment
Web AnimationsThe definition of 'currentTime' in that specification.	Working Draft	Editor's draft.

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`currentTime` Experimental'	Chrome No support No	Edge No support No	Firefox Full support 75 Full support 75 Full support 63 Disabled' Disabled' From version 63: this feature is behind the `dom.animations-api.timelines.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. No support 48 — 63 Disabled' Disabled' From version 48 until version 63 (exclusive): this feature is behind the `dom.animations-api.core.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	IE No support No	Opera No support No	Safari Full support 13.1	WebView Android No support No	Chrome Android No support No	Firefox Android Full support 63 Disabled' Full support 63 Disabled' Disabled' From version 63: this feature is behind the `dom.animations-api.timelines.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config. No support 48 — 63 Disabled' Disabled' From version 48 until version 63 (exclusive): this feature is behind the `dom.animations-api.core.enabled` preference (needs to be set to `true`). To change preferences in Firefox, visit about:config.	Opera Android No support No	Safari iOS Full support 13.4	Samsung Internet Android No support No

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.': User must explicitly enable this feature.