The byteLength
accessor property represents the length of an ArrayBuffer
in bytes.
Syntax
arraybuffer.byteLength
Description
The byteLength
property is an accessor property whose set accessor function is undefined
, meaning that you can only read this property. The value is established when the array is constructed and cannot be changed. This property returns 0 if this ArrayBuffer
has been detached.
Examples
var buffer = new ArrayBuffer(8); buffer.byteLength; // 8
Specifications
Specification | Status | Comment |
---|---|---|
Typed Array Specification | Obsolete | Superseded by ECMAScript 2015. |
ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'ArrayBuffer.prototype.byteLength' in that specification. |
Standard | Initial definition in an ECMA standard. |
ECMAScript Latest Draft (ECMA-262) The definition of 'ArrayBuffer.prototype.byteLength' in that specification. |
Living Standard |
Browser compatibility
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 | IE mobile | Opera Android | iOS Safari |
---|---|---|---|---|---|---|---|
Basic support | 4 | Yes | Yes | 4 | 10 | 11.6 | 4.2 |