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Element: ariaAtomic プロパティ - Web API | MDN
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Element: ariaAtomic プロパティ
Baseline
2023
Newly available
Since October 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
ariaAtomic は Element インターフェイスのプロパティで、aria-atomic 属性の値を反映します。これは、aria-relevant 属性によって定義された変更通知に基づいて、支援技術が変更された領域をすべて表示するか、部分的に表示するかを示します。
値
文字列で、以下の値のいずれかです。
例
この例では、ID が "clock" の要素の aria-atomic 属性は "true" に設定されています。ariaAtomic を使用して値を "false" に更新します。
html
<div id="clock" role="timer" aria-live="polite" aria-atomic="true"></div>
js
let el = document.getElementById("clock");
console.log(el.ariaAtomic); // true
el.ariaAtomic = "false";
console.log(el.ariaAtomic); // false
仕様書
| Specification |
|---|
| Accessible Rich Internet Applications (WAI-ARIA) # dom-ariamixin-ariaatomic |
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