CSSRule: parentRule property
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
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 (width >= 500px) {
.box {
width: 100px;
height: 200px;
background-color: red;
}
body {
color: blue;
}
}
js
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
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