DataView.prototype.getInt32()
getInt32()
方法
从
DataView
相对于起始位置偏移 n 个字节处开始,获取一个32-bit数(长整型,4个字节).
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语法
dataview.getInt32(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 32-bit int is stored in little- or big-endian format. If false or undefined, a big-endian value is read.
返回
- 一个长整型32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.getInt32(1); // 0
规范
Specification | Status | Comment |
---|---|---|
Typed Array Specification | Obsolete | Superseded by ECMAScript 6. |
ECMAScript 2015 (6th Edition, ECMA-262) DataView.prototype.getInt32 |
Standard | Initial definition in an ECMA standard. |
ECMAScript (ECMA-262) DataView.prototype.getInt32 |
Living Standard |
浏览器支持
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