This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The parentStyleSheet property of the CSSRule interface returns the StyleSheet object in which the current rule is defined.
A StyleSheet object.
const docRules = document.styleSheets[0].cssRules; console.log(docRules[0].parentStyleSheet === document.styleSheets[0]); // returns true
| Specification |
|---|
| CSS Object Model (CSSOM)> # dom-cssrule-parentstylesheet> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
parentStyleSheet |
1 | 12 | 1 | ≤12.1 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/CSSRule/parentStyleSheet