BigInt.asUintN
静态方法将 BigInt
转换为一个 0 和 2width-1 之间的无符号整数。
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语法
BigInt.asUintN(width, bigint);
参数
-
width
- 可存储整数的位数。
-
bigint
- 要存储在指定位数上的整数。
返回值
bigint
模(modulo) 2width
作为无符号整数的值。
例子
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。
const max = 2n ** 64n - 1n; BigInt.asUintN(64, max); // ↪ 18446744073709551615n BigInt.asUintN(64, max + 1n); // ↪ 0n // zero because of overflow
标准
Specification | Status |
---|---|
ECMAScript Latest Draft (ECMA-262) BigInt.asUintN() |
Draft |
浏览器支持
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out
https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
asUintN |
Chrome Full support 67 | Edge No support No | Firefox Full support 68 | IE No support No | Opera Full support 54 | Safari No support No | WebView Android Full support 67 | Chrome Android Full support 67 | Firefox Android Full support 68 | Opera Android Full support 48 | Safari iOS No support No | Samsung Internet Android Full support 9.0 | nodejs Full support 10.4.0 |
Legend
- Full support
- Full support
- No support
- No support