CSSGroupingRule.cssRules

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2015.

cssRulesCSSGroupingRule インターフェイスのプロパティで、 CSSRuleList 型で CSSRule オブジェクトのコレクションを返します。

CSSRuleList です。

js
let myRules = document.styleSheets[0].cssRules;
console.log(myRules);

仕様書

Specification
CSS Object Model (CSSOM)
# dom-cssgroupingrule-cssrules

ブラウザーの互換性

BCD tables only load in the browser