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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

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	Yes	Yes	48 48 5 Prefixed Prefixed Requires the vendor prefix: moz	10	12 Prefixed 12 Prefixed Prefixed Requires the vendor prefix: -o	4
`appendRule`	Yes Yes ? — 45 Uses the non-standard name: `insertRule`	?	22 22 5 — 22 Uses the non-standard name: `insertRule`	10 10 Uses the non-standard name: `insertRule`	Yes Yes Uses the non-standard name: `insertRule`	Yes Yes Uses the non-standard name: `insertRule`
`cssRules`	?	?	?	?	?	?
`deleteRule`	?	?	?	?	?	?
`findRule`	?	?	?	?	?	?
`name`	?	?	?	?	?	?

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	Yes	Yes	Yes	48 48 5 Prefixed Prefixed Requires the vendor prefix: moz	12 Prefixed 12 Prefixed Prefixed Requires the vendor prefix: -o	Yes	?
`appendRule`	Yes Yes ? — 45 Uses the non-standard name: `insertRule`	Yes Yes ? — 45 Uses the non-standard name: `insertRule`	?	22 22 5 — 22 Uses the non-standard name: `insertRule`	Yes Yes Uses the non-standard name: `insertRule`	Yes Yes Uses the non-standard name: `insertRule`	?
`cssRules`	?	?	?	?	?	?	?
`deleteRule`	?	?	?	?	?	?	?
`findRule`	?	?	?	?	?	?	?
`name`	?	?	?	?	?	?	?

CSSKeyframesRule

Properties

Methods

Specification

Browser compatibilityUpdate compatibility data on GitHub

See also