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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 Animation() constructor of the Web Animations API returns a new Animation object instance.


var animation = new Animation([effect][, timeline]);


effect Optional
The target effect, as an object based on the AnimationEffectReadOnly interface, to assign to the animation. Although in the future other effects such as SequenceEffects or GroupEffects might be possible, the only kind of effect currently available is KeyframeEffect. This can be null (which is the default) to indicate that there should be no effect applied.
timeline Optional
Specifies the timeline with which to associate the animation, as an object of a type based on the AnimationTimeline interface. Currently the only timeline type available is DocumentTimeline, but in the future there my be timelines associated with gestures or scrolling, for example. The default value is Document.timeline, but this can be set to null as well.


In the Follow the White Rabbit example, the Animation() constructor is used to create an Animation for the rabbitDownKeyframes using the document's timeline:

var rabbitDownAnimation = new Animation(rabbitDownKeyframes, document.timeline);


Specification Status Comment
Web Animations
The definition of 'Animation()' in that specification.
Working Draft Editor's draft.

Browser compatibility

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support No support 48 (48)[1] No support No support No support
Feature Android Firefox Mobile (Gecko) IE Phone Opera Mobile Safari Mobile
Basic support No support 48.0 (48) [1] No support No support No support

[1] The Web Animations API is only enabled by default in Firefox Developer Edition and Nightly builds. You can enable it in release builds by setting the preference dom.animations-api.core.enabled to true, and can disable it in any Firefox version by setting this preference to false.

See also

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