CSSKeyframesRule

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

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 :

CSSKeyframesRule.name: Represents the name of the animation, used by the animation-name property.
CSSKeyframesRule.cssRules Read only: Returns a CSSRuleList of the CSS rules in the media rule.

Methods

As a CSSRule, CSSKeyframesRule also implements the methods of that interface. It has three specific methods:

CSSKeyframesRule.appendRule(): Inserts a new keyframe rule into the current CSSKeyframesRule. The parameter is a DOMString containing a keyframe in the same format as an entry of a @keyframes at-rule. If it contains more than one keyframe rule, a DOMException with a SYNTAX_ERR is thrown.
CSSKeyframesRule.deleteRule(): Deletes a keyframe rule from the current CSSKeyframesRule. The parameter is the index of the keyframe to be deleted, expressed as a DOMString resolving as a number between 0% and 100%.
CSSKeyframesRule.findRule(): Returns a keyframe rule corresponding to the given key. The key is a DOMString containing an index of the keyframe to be returned, resolving to a percentage between 0% and 100%. If no such keyframe exists, findRule returns null.

Specification

Specification	Status	Comment
CSS Animations The definition of 'CSSKeyframesRule' in that specification.	Working Draft	Initial definition

Feature	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	Yes	48 5 moz	10	12 -o	4
`appendRule`	Yes Yes — 45¹	?	22 5 — 22¹	10¹	Yes¹	Yes¹
`cssRules`	?	?	?	?	?	?
`deleteRule`	?	?	?	?	?	?
`findRule`	?	?	?	?	?	?
`name`	?	?	?	?	?	?

Feature	Android webview	Chrome for Android	Edge mobile	Firefox for Android	Opera Android	iOS Safari	Samsung Internet
Basic support	Yes	Yes	Yes	48 5 moz	12 -o	Yes	?
`appendRule`	Yes Yes — 45¹	Yes Yes — 45¹	?	22 5 — 22¹	Yes¹	Yes¹	?
`cssRules`	?	?	?	?	?	?	?
`deleteRule`	?	?	?	?	?	?	?
`findRule`	?	?	?	?	?	?	?
`name`	?	?	?	?	?	?	?

1. Supported as insertRule.

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support Experimental	Chrome Full support Yes	Edge Full support Yes	Firefox Full support 48 Full support 48 Full support 5 Prefixed Prefixed Requires the vendor prefix: moz	IE Full support 10	Opera Full support 12 Prefixed Full support 12 Prefixed Prefixed Requires the vendor prefix: -o	Safari Full support 4	WebView Android Full support Yes	Chrome Android Full support Yes	Edge Mobile Full support Yes	Firefox Android Full support 48 Full support 48 Full support 5 Prefixed Prefixed Requires the vendor prefix: moz	Opera Android Full support 12 Prefixed Full support 12 Prefixed Prefixed Requires the vendor prefix: -o	Safari iOS Full support Yes	Samsung Internet Android ?
`appendRule` Experimental	Chrome Full support Yes Full support Yes No support ? — 45 Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Edge ?	Firefox Full support 22 Full support 22 No support 5 — 22 Alternate Name Alternate Name Uses the non-standard name: `insertRule`	IE Full support 10 Alternate Name Full support 10 Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Opera Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Safari Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `insertRule`	WebView Android Full support Yes Full support Yes No support ? — 45 Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Chrome Android Full support Yes Full support Yes No support ? — 45 Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Edge Mobile ?	Firefox Android Full support 22 Full support 22 No support 5 — 22 Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Opera Android Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Safari iOS Full support Yes Alternate Name Full support Yes Alternate Name Alternate Name Uses the non-standard name: `insertRule`	Samsung Internet Android ?
`cssRules` Experimental	Chrome ?	Edge ?	Firefox ?	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Edge Mobile ?	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`deleteRule` Experimental	Chrome ?	Edge ?	Firefox ?	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Edge Mobile ?	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`findRule` Experimental	Chrome ?	Edge ?	Firefox ?	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Edge Mobile ?	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android ?
`name` Experimental	Chrome ?	Edge ?	Firefox ?	IE ?	Opera ?	Safari ?	WebView Android ?	Chrome Android ?	Edge Mobile ?	Firefox Android ?	Opera Android ?	Safari iOS ?	Samsung Internet Android ?

Legend

Full support: Full support
Compatibility unknown: Compatibility unknown
Experimental. Expect behavior to change in the future.: Experimental. Expect behavior to change in the future.
Uses a non-standard name.: Uses a non-standard name.
Requires a vendor prefix or different name for use.: Requires a vendor prefix or different name for use.

CSSKeyframesRule

Properties

Methods

Specification

Browser compatibility

Legend

See also

Document Tags and Contributors

CSSKeyframesRule

Properties

Methods

Specification

Browser compatibility

Legend

See also

Document Tags and Contributors

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