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DataView.prototype.getInt8()

getInt8()方法DataView起始位置以byte为计数的指定偏移量(byteOffset)处获取一个有符号的8-bit整数(一个字节).

语法

dataview.getInt8(byteOffset)

参数

byteOffset
偏移量, 单位为字节, 从头开始计算.

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.getInt8(1); // 0

规范

规范 状态 说明
Typed Array Specification Obsolete Superseded by ECMAScript 6.
ECMAScript 2015 (6th Edition, ECMA-262)
DataView.prototype.getInt8
Standard Initial definition in an ECMA standard.
ECMAScript 2017 Draft (ECMA-262)
DataView.prototype.getInt8
Draft  

浏览器兼容性

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

 

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