CSSKeyframeRule: style property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨August 2016⁩.

The read-only CSSKeyframeRule.style property is the CSSStyleDeclaration interface for the declaration block of the CSSKeyframeRule.

Value

A CSSStyleDeclaration object, with the following properties:

computed flag: Unset.
declarations: The declared declarations in the rule, in the order they were specified, shorthand properties expanded to longhands.
parent CSS rule: The context object, which is an alias for this.
owner node: Null.

The CSS includes a @keyframes at-rule. This will be the first CSSRule returned by document.styleSheets[0].cssRules. myRules[0] returns a CSSKeyframesRule object, which will contain individual CSSKeyFrameRule objects for each keyframe.

css

@keyframes slide-in {
  from {
    transform: translateX(0%);
  }

  to {
    transform: translateX(100%);
  }
}

let myRules = document.styleSheets[0].cssRules;
let keyframes = myRules[0]; // a CSSKeyframesRule
console.log(keyframes[0].style); // a CSSStyleDeclaration