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Element: ariaSetSize プロパティ - Web API | MDN
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Element: ariaSetSize 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.
ariaSetSize は Element インターフェイスのプロパティで、リスト項目またはツリー項目の現在の設定にある項目の数を定義する aria-setsize 属性の値を反映します。
値
整数の入った文字列です。
例
この例では、ID が tab-id である要素の aria-setsize 属性を "3" に設定し、機器にグループ内に現在 3 つのタブがあることを通知しています。ariaSetSize を使用して、値を "4" に更新します。
html
<button
role="tab"
aria-selected="true"
aria-setsize="3"
aria-controls="tabpanel-id"
id="tab-id">
Tab label
</button>
js
let el = document.getElementById("tab-id");
console.log(el.ariaSetSize); // 3
el.ariaSetSize = "4";
console.log(el.ariaSetSize); // 4
仕様書
| Specification |
|---|
| Accessible Rich Internet Applications (WAI-ARIA) # dom-ariamixin-ariasetsize |
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