This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use 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 spec changes.

The AnimationEvent interface represents events providing information related to animations.


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: ''.


Creates an AnimationEvent event with the given parameters.


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 Firefox (Gecko) Internet Explorer Opera Safari
Basic support

1.0 webkit


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


23.0 (23.0) Not supported Not supported Not supported
initAnimationEvent() 1.0 6.0 (6.0)
Removed in 23.0 (23.0)
10.0 12 4.0
pseudoelement Not supported 23.0 (23.0) Not supported Not supported Not supported
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support (Yes)webkit 6.0 (6.0) 10.0 12 o
15.0 webkit
(Yes)webkit 43.0
AnimationEvent() constructor Not supported 23.0 (23.0) Not supported Not supported Not supported 43.0
initAnimationEvent() (Yes) 6.0 (6.0)
Removed in 23.0 (23.0)
10.0 (Yes) (Yes) Not supported
pseudoelement Not supported 23.0 (23.0) Not supported Not supported Not supported Not supported

See also


© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.

API Experimental Interface Reference Web Animations