getUint16()
方法
从
DataView
相对于起始位置偏移 n 个字节处开始,获取一个16-bit数(无符号短整型,2个字节).
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语法
dataview.getUint16(byteOffset [, littleEndian])
参数
- byteOffset
- 偏移量, 单位为字节, 从头开始计算.
- littleEndian
- 可选 Indicates whether the 16-bit int is stored in little- or big-endian format. If false or undefined, a big-endian value is read.
返回
- 一个无符号短整型16位数.
抛出错误
RangeError
- 如果byteOffset超出了视图能储存的值,就会抛出错误.
描述
- 没有对齐约束; 多字节值可以从任何偏移量获取.
例子
var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.getUint16(1); // 0
规范
Specification | Status | Comment |
---|---|---|
Typed Array Specification | Obsolete | Superseded by ECMAScript 6. |
ECMAScript 2015 (6th Edition, ECMA-262) DataView.prototype.getUint16 |
Standard | Initial definition in an ECMA standard. |
ECMAScript (ECMA-262) DataView.prototype.getUint16 |
Living Standard |
浏览器支持
BCD tables only load in the browser
The compatibility table on 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.