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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 CSSKeyframesRule interface describes an object representing a complete set of keyframes for a CSS animation. It corresponds to the contains of a whole @keyframes at-rule. It implements the CSSRule interface with a type value of 7 (CSSRule.KEYFRAMES_RULE).
Properties
As a CSSRule, CSSKeyframesRule also implements the properties of these interfaces. It has two properties :
CSSPageRule.name- Represents the name of the animation, used by the
animation-nameproperty. CSSPageRule.cssRulesRead only- Returns a
CSSRuleListof the CSS rules in the media rule.
Methods
As a CSSRule, CSSKeyframesRule also implements the methods of that interface. It has three specific methods:
CSSPageRule.appendRule- Inserts a new keyframe rule into the current CSSKeyframesRule. The parameter is a
DOMStringcontaining a keyframe in the same format as an entry of a@keyframesat-rule. If it contains more than one keyframe rule, aDOMExceptionwith aSYNTAX_ERRis thrown. CSSPageRule.deleteRule- Deletes a keyframe rule from the current CSSKeyframesRule. The parameter is the index of the keyframe to be deleted, expressed as a
DOMStringresolving as a number between0and1. CSSPageRule.findRule- Returns a keyframe rule corresponding to the given key. The key is a
DOMStringcontaining an index of the keyframe to be returned, resolving to a number between0and1. If no such keyframe exists,findRulereturnsnull.
Specification
| Specification | Status | Comment |
|---|---|---|
| CSS Animations The definition of 'CSSKeyframesRule' in that specification. |
Working Draft | Initial definition |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | (Yes) | 5.0 (5.0) -moz 48 (48) |
10 | 12 -o 12.10 |
4.0 |
appendRule |
(Yes)[1] | 5.0 (5.0)[2] 22.0 (22.0) |
10[3] | (Yes)[3] | (Yes)[3] |
| Feature | Android | Android Webview | Firefox Mobile (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | ? | (Yes) | 5.0 (5.0) -moz 48 (48) |
(Yes) | 12 -o 12.10 |
(Yes) | (Yes) |
appendRule |
? | (Yes)[1] | 5.0 (5.0)[2] 22.0 (22.0) |
(Yes)[3] | (Yes)[3] | (Yes)[3] | (Yes)[1] |
[1] The non-standard name insertRule() was removed in Chrome 45.
[2] Gecko 5.0 implemented this with the non-standard name insertRule(). In Gecko 22.0 it was changed to the standard name appendRule.
[3] Internet Explorer 10, Safari and Opera implement this with the non-standard name insertRule().