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CSSKeyframesRule: cssRules property

The read-only cssRules property of the CSSKeyframeRule interface returns a CSSRuleList containing the rules in the keyframes at-rule.

Value

Examples

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. The cssRules property returns a CSSRuleList containing two rules.

css

@keyframes slidein {
  from {
    transform: translateX(0%);
  }

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

js

let myRules = document.styleSheets[0].cssRules;
let keyframes = myRules[0]; // a CSSKeyframesRule
console.log(keyframes.cssRules); // a CSSRuleList object with two rules

Specifications

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
cssRules 1 12 5 10 12 4 4.4 18 5 12 3.2 1.0

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https://developer.mozilla.org/en-US/docs/Web/API/CSSKeyframesRule/cssRules