CSSRuleList.length
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.
length
は CSSRuleList
インターフェイスのプロパティで、リスト内の CSSRule
オブジェクトの数を返します。
構文
js
let length = CSSRuleList.length;
値
整数です。
例
以下の例では、 myRules
という名前の CSSRuleList
にあるアイテムの数をコンソールに出力します。
js
let myRules = document.styleSheets[0].cssRules;
console.log(myRules.length);
仕様書
Specification |
---|
CSS Object Model (CSSOM) # dom-cssrulelist-length |
ブラウザーの互換性
Report problems with this compatibility data on GitHubdesktop | mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
length |
Legend
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- Full support
- Full support
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