Animation.constructor

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

Syntax

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

Parameters

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.

Examples

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);

Specifications

Browser compatibility

[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

• Web Animations API
• Animation