byteLength访问器属性表示一个ArrayBuffer 对象的字节长度。
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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| Typed Array Specification | Obsolete | Superseded by ECMAScript 6.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
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 7 | Yes | 4 | 10 | 11.6 | 5.1 |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 4 | Yes | Yes | 4 | 11.6 | 4.2 | Yes |