This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the specification changes.

The AnimationEvent interface represents events providing information related to animations.


Creates an AnimationEvent event with the given parameters.


Also inherits properties from its parent Event.

AnimationEvent.animationName Read only
Is a DOMString containing the value of the animation-name CSS property associated with the transition.
AnimationEvent.elapsedTime Read only
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).
AnimationEvent.pseudoElement Read only
Is a DOMString, starting with '::', containing the name of the pseudo-element the animation runs on. If the animation doesn't run on a pseudo-element but on the element, an empty string: ''.


Also inherits methods from its parent Event.

Initializes a AnimationEvent created using the deprecated Document.createEvent("AnimationEvent") method.


Specification Status Comment
CSS Animations
The definition of 'AnimationEvent' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support

1.0 webkit


(Yes) 6.0 (6.0) 10.0 12 o
15.0 webkit
4.0 webkit
AnimationEvent() constructor


(Yes) 23.0 (23.0) No support No support No support
initAnimationEvent() 1.0 (Yes) 6.0 (6.0)
Removed in 23.0 (23.0)
10.0 12 4.0
pseudoelement No support No support 23.0 (23.0) No support No support No support
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support (Yes)webkit (Yes) 6.0 (6.0) 10.0 12 o
15.0 webkit
(Yes)webkit 43.0
AnimationEvent() constructor No support (Yes) 23.0 (23.0) No support No support No support 43.0
initAnimationEvent() (Yes) (Yes) 6.0 (6.0)
Removed in 23.0 (23.0)
10.0 (Yes) (Yes) No support
pseudoelement No support No support 23.0 (23.0) No support No support No support No support

See also

Document Tags and Contributors

 Last updated by: jpmedley,