KeyframeEffectReadOnly.composite
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 composite
property of a KeyframeEffectReadOnly
or a KeyframeEffect
resolves how an element's animation impacts its underlying property values.
Note: For KeyframeEffect
, this property is both a getter and a setter. For KeyframeEffectReadOnly
, it is read-only.
Syntax
// getting var compositeEnumeration = keyframeEffect.composite; // setting keyframeEffect.composite = 'accumulate';
Value
To understand these values, take the example of a keyframeEffect
value of blur(2)
working on an underlying property value of blur(3)
.
- replace
- The
keyframeEffect
overrides the underlying value it is combined with:blur(2)
replacesblur(3)
. - add
- The
keyframeEffect
is added to the underlying value with which it is combined (aka additive):blur(2) blur(3)
. - accumulate
- The keyframeEffect is accumulated on to the underlying value:
blur(5)
.
Specifications
Specification | Status | Comment |
---|---|---|
Web Animations The definition of 'keyframeEffectReadOnly.composite' in that specification. |
Working Draft | Editor's draft. |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
---|---|---|---|---|---|
Basic support | No support | No support | No support | No support | No support |
Feature | Android | Android Webview | Chrome for Android | Firefox Mobile (Gecko) | Firefox OS | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|---|
Basic support | ? | ? | ? | ? | ? | ? | ? | ? |
See also
- Web Animations API
- Property of both
KeyframeEffectReadOnly
andKeyframeEffect
objects. Only the latter is mutable.
License
© 2016 Mozilla Contributors
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-us/docs/web/api/keyframeeffectreadonly/composite