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CSSStyleDeclaration.parentRule - Web API | MDN
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CSSStyleDeclaration.parentRule
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
CSSStyleDeclaration.parentRule は読み取り専用のプロパティで、このスタイルブロックの親である CSSRule を返します。例えば、 CSS セレクターのスタイルを表す CSSStyleRule です。
値
この宣言ブロックを含む CSS ルール、またはこの CSSStyleDeclaration が CSSRule に割り当てられていない場合は null を返します。
例
次の JavaScript コードは、 CSSStyleDeclaration から親の CSS スタイルルールを取得します。
js
const declaration = document.styleSheets[0].rules[0].style;
const rule = declaration.parentRule;
仕様書
| Specification |
|---|
| CSS Object Model (CSSOM) # dom-cssstyledeclaration-parentrule |
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