AnimationEffect and KeyframeEffect are part of the Web Animations API. They allow a developer interactive control over the following parts of their Animation: * the Animation target (i.e. what element is being animated) * the Animation timing properties (duration, delay, etc) We do not intend to ship the composite and iterationComposite members or the getKeyframes/setKeyframes methods at this time.


Specification link

Specification currently under development in a Working Group

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Intent to Prototype url

Intent to Prototype thread

Last updated on 2021-12-13