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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| Typed Array Specification | Obsolete | Superseded by ECMAScript 6. |
| ECMAScript 2015 (6th Edition, ECMA-262) The definition of 'ArrayBuffer.prototype.byteLength' in that specification. |
Standard | Initial definition in an ECMA standard. |
| ECMAScript 2017 Draft (ECMA-262) The definition of 'ArrayBuffer.prototype.byteLength' in that specification. |
Draft |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | 7.0 | 4.0 (2) | 10 | 11.6 | 5.1 |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | 4.0 | (Yes) | 4.0 (2) | 10 | 11.6 | 4.2 |