byteLength访问器属性表示一个ArrayBuffer 对象的字节长度。

语法

arraybuffer.byteLength

描述

byteLength属性是一个访问器属性,它的set访问器函数是undefined,这意味着你只能读这个属性。 该值在数组创建时确定,并且不可变更。如果这个ArrayBuffer 被移除,则此属性返回0。

 

示例

var buffer = new ArrayBuffer(8);
buffer.byteLength; // 8

规范

规范 状态 备注
Typed Array Specification Obsolete Superseded by ECMAScript 6.
ECMAScript 2015 (6th Edition, ECMA-262)
ArrayBuffer.prototype.byteLength
Standard Initial definition in an ECMA standard.

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 7Edge Full support YesFirefox Full support 4IE Full support 10Opera Full support 11.6Safari Full support 5.1WebView Android Full support 4Chrome Android Full support YesEdge Mobile Full support YesFirefox Android Full support 4Opera Android Full support 11.6Safari iOS Full support 4.2Samsung Internet Android Full support Yesnodejs Full support Yes

Legend

Full support  
Full support

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