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TypedArray.prototype.toReversed() - JavaScript | MDN
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TypedArray.prototype.toReversed()
Baseline
2023
Newly available
Since July 2023, this feature works across the latest devices and browser versions. This feature might not work in older devices or browsers.
toReversed() は TypedArray インスタンスのメソッドで、 reverse() メソッドに対応するコピーメソッドです。このメソッドは、要素を逆順にした新しい型付き配列を返します。このメソッドは Array.prototype.toReversed() と同じアルゴリズムです。
構文
js
toReversed()
引数
なし。
返値
要素を逆順に格納した新しい型付き配列です。
解説
詳細については、 Array.prototype.toReversed() をご覧ください。このメソッドは汎用的ではなく、型付き配列インスタンスに対してのみ呼び出すことができます。
例
toReversed() の使用
js
const uint8 = new Uint8Array([1, 2, 3]);
const reversedUint8 = uint8.toReversed();
console.log(reversedUint8); // Uint8Array [3, 2, 1]
console.log(uint8); // Uint8Array [1, 2, 3]
仕様書
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-%typedarray%.prototype.toreversed |
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