DataView.prototype.setUint32()
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2015年7月.
setUint32() 从 DataView 起始位置以 byte 为计数的指定偏移量 (byteOffset) 处储存一个 32-bit 数 (无符号长整型)。
尝试一下
// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);
const view = new DataView(buffer);
view.setUint32(1, 4294967295); // Max unsigned 32-bit integer
console.log(view.getUint32(1));
// Expected output: 4294967295
语法
dataview.setUint32(byteOffset, value [, littleEndian])
参数
- byteOffset
-
偏移量，从头开始计算，单位为字节。
- value
-
设置的数值。
- littleEndian
-
可选 Indicates whether the 32-bit int is stored in little- or big-endian format. If false or undefined, a big-endian value is written.
返回
抛出错误
RangeError-
如果 byteOffset 超出了视图能储存的值，就会抛出错误。
示例
js
var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.setUint32(1, 3);
dataview.getUint32(1); // 3
规范
| Specification |
|---|
| ECMAScript® 2026 Language Specification # sec-dataview.prototype.setuint32 |
浏览器兼容性
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