setUint8()从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(无符号字节).
语法
dataview.setUint8(byteOffset, value)
参数
- byteOffset
- 偏移量，从头开始计算，单位为字节
- value
- 设置的数值
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.
例子
var buffer = new ArrayBuffer(8); var dataview = new DataView(buffer); dataview.setUint8(1, 3); dataview.getUint8(1); // 3
规范
| Specification | Status | Comment |
|---|---|---|
| Typed Array Specification | Obsolete | Superseded by ECMAScript 6. |
| ECMAScript 2015 (6th Edition, ECMA-262) DataView.prototype.setUint8 |
Standard | Initial definition in an ECMA standard. |
| ECMAScript 2017 Draft (ECMA-262) DataView.prototype.setUint8 |
Draft |
浏览器支持
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 9.0 | 15.0 (15.0) | 10 | 12.1 | 5.1 |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | 4.0 | (Yes) | 15.0 (15) | ? | 12.0 | 4.2 |