JavaScript ArrayBuffer byteLength
🌙
手机阅读
本文目录结构
**byteLength**访问器属性表示一个ArrayBuffer 对象的字节长度。
The source for this interactive example is stored in a GitHub repository. If you’d like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request.
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| Typed Array Specification | Obsolete | Superseded by ECMAScript 6.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](https://www.ecma-international.org/ecma-262/6.0/#sec-get-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.
Update compatibility data on GitHub
| Desktop | Mobile | Server | |
|---|---|---|---|
| Chrome | Edge | Firefox | |
| — | — | — | — |
byteLength |
Chrome Full support 7 | Edge Full support 12 | Firefox Full support 4 |
Legend
Full support
Full support
