DataView.prototype.setInt8()

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

setInt8()DataView 起始位置以 byte 为计数的指定偏移量 (byteOffset) 处储存一个 8-bit 数 (一个字节)。

尝试一下

// Create an ArrayBuffer with a size in bytes
const buffer = new ArrayBuffer(16);

const view = new DataView(buffer);
view.setInt8(1, 127); // Max signed 8-bit integer

console.log(view.getInt8(1));
// Expected output: 127

语法

dataview.setInt8(byteOffset, value)

参数

byteOffset

偏移量,从头开始计算,单位为字节

value

设置的整数值

返回

抛出的错误

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.setInt8(1, 3);
dataview.getInt8(1); // 3

规范

Specification
ECMAScript® 2025 Language Specification
# sec-dataview.prototype.setint8

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
setInt8

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

相关内容