BigInt.prototype.valueOf()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since September 2020.
valueOf()
メソッドは、 BigInt
オブジェクトにラップされたプリミティブ値を返します。
試してみましょう
console.log(typeof Object(1n));
// Expected output: "object"
console.log(typeof Object(1n).valueOf());
// Expected output: "bigint"
構文
js
bigIntObj.valueOf();
返値
指定された BigInt
オブジェクトのプリミティブ値を表す BigInt です。
例
valueOf
の使用
js
typeof Object(1n); // object
typeof Object(1n).valueOf(); // bigint
仕様書
Specification |
---|
ECMAScript® 2025 Language Specification # sec-bigint.prototype.valueof |
ブラウザーの互換性
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valueOf |
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- Full support
- Full support
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