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 TransitionEvent() constructor returns a newly created TransitionEvent, representing an event in relation with an transition.


transitionEvent = new TransitionEvent(type<code>, </code>{animationName: aPropertyName, 
                                             elapsedTime  : <code>aFloat, 
                                             pseudoElement: aPseudoElementName</code>});


The TransitionEvent() constructor also inherits arguments from Event().

Is a DOMString representing the name of the type of the TransitionEvent. It is case-sensitive and can only be: 'transitionend'.
animationName Optional
Is a DOMString containing the value of the animation-name CSS property associated with the transition. It defaults to "".
elapsedTime Optional
Is 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). It defaults to 0.0.
pseudoElement Optional
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: "". It defaults to "".


Specification Status Comment
CSS Transitions
The definition of 'TransitionEvent()' in that specification.
Working Draft Initial definition.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
Basic support No support 23.0 (23.0) No support No support No support
Feature Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support No support 23.0 (23.0) No support No support No support

See also


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

API Constructor CSS CSS3 Transitions CSSOM Experimental Reference TransitionEvent