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CSSRule: parentRule property

The parentRule property of the CSSRule interface returns the containing rule of the current rule if this exists, or otherwise returns null.

Value

A CSSRule which is the type of the containing rules. If the current rule is inside a media query, this would return CSSMediaRule. Otherwise it returns null.

Examples

css

@media (min-width: 500px) {
  .box {
    width: 100px;
    height: 200px;
    background-color: red;
  }

  body {
    color: blue;
  }
}

let myRules = document.styleSheets[0].cssRules;
let childRules = myRules[0].cssRules;
console.log(childRules[0].parentRule); // a CSSMediaRule

Specifications

Specification
CSS Object Model (CSSOM) # dom-cssrule-parentrule

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
`parentRule`	1	12	1	9	≤12.1	1	4.4	18	4	≤12.1	1	1.0

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https://developer.mozilla.org/en-US/docs/Web/API/CSSRule/parentRule