BigInt.asUintN()
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.
BigInt.asUintN 静态方法将 BigInt 转换为一个 0 和 2^width-1 之间的无符号整数。
尝试一下
语法
BigInt.asUintN(width, bigint);
参数
返回值
bigint 模 (modulo) 2^width 作为无符号整数的值。
示例
保持在 64 位范围内
BigInt.asUintN() 方法对于保持在 64 位 (64-bit) 算数范围内非常有用。
js
const max = 2n ** 64n - 1n;
BigInt.asUintN(64, max);
// ↪ 18446744073709551615n
BigInt.asUintN(64, max + 1n);
// ↪ 0n
// zero because of overflow
规范
| Specification |
|---|
| ECMAScript Language Specification # sec-bigint.asuintn |
浏览器兼容性
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