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() 方法返回 BigInt 对象包装的原始值。

尝试一下

console.log(typeof Object(1n));
// Expected output: "object"

console.log(typeof Object(1n).valueOf());
// Expected output: "bigint"

语法

bigIntObj.valueOf()

返回值

表示指定 BigInt 对象的原始 BigInt 值。

示例

Using valueOf

js
typeof Object(1n); // object
typeof Object(1n).valueOf(); // bigint

规范

Specification
ECMAScript® 2025 Language Specification
# sec-bigint.prototype.valueof

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobileserver
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
Deno
Node.js
valueOf

Legend

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Full support
Full support

请参阅