byteOffset 属性描述了从 ArrayBuffer 开始的字节偏移量。

语法

dataview.byteOffset

描述

 byteOffset 属性是一个获取(accessor)属性,它的 set 属性为 undefined,这意味着它是只读的。值在 DataView 被创建时就确定了,且不能改变。

示例

使用 byteOffset 属性

var buffer = new ArrayBuffer(8);
var dataview = new DataView(buffer);
dataview.byteOffset; // 0 (没有指定偏移量)

var dataview2 = new DataView(buffer, 3);
dataview2.byteOffset; // 3 (在构造DataView时指定)

规范

Specification Status Comment
ECMAScript 2015 (6th Edition, ECMA-262)
DataView.prototype.byteOffset
Standard Initial definition.
ECMAScript Latest Draft (ECMA-262)
DataView.prototype.byteOffset
Draft  

浏览器兼容性

Update compatibility data on GitHub
DesktopMobileServer
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidEdge MobileFirefox for AndroidOpera for AndroidiOS SafariSamsung InternetNode.js
Basic supportChrome 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 YesEdge Mobile Full support YesFirefox Android Full support 15Opera Android Full support 12Safari iOS Full support 4.2Samsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support

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