getInt8()方法DataView相对于起始位置偏移 n 个字节处开始,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, 从起始位置开始计算.

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Typed Array Specification Obsolete Superseded by ECMAScript 6.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 Latest Draft (ECMA-262)
DataView.prototype.getInt8
Draft

浏览器兼容性

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung InternetNode.js
getInt8Chrome Full support 9Edge Full support 12Firefox Full support 15IE Full support 10Opera Full support 12.1Safari Full support 5.1WebView Android Full support 4Chrome Android Full support YesFirefox Android Full support 15Opera Android Full support 12.1Safari iOS Full support 4.2Samsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support

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