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Highlight: add() メソッド - Web API | MDN
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このページはコミュニティーの尽力で英語から翻訳されました。MDN Web Docs コミュニティーについてもっと知り、仲間になるにはこちらから。
Highlight: add() メソッド
Baseline
2025
Newly available
Since June 2025, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
add() は Highlight インターフェイスのメソッドで、 CSS カスタムハイライト API を使用してスタイル設定される、新しい Range オブジェクトをハイライトに追加します。
構文
js
add(range)
引数
返値
範囲が追加された Highlight オブジェクト。
例
以下のコードスニペットは、新しいハイライトオブジェクトに 2 つの範囲を追加する方法を示しています。
js
const highlight = new Highlight();
const range1 = new Range();
const range2 = new Range();
highlight.add(range1).add(range2);
console.log(highlight.size); // 2
仕様書
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-set.prototype.add |
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