arrayBuffer.byteLength

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Typed Array Specification	Obsolete	Superseded by ECMAScript 2015.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 2017 Draft (ECMA-262) The definition of 'ArrayBuffer.prototype.byteLength' in that specification.	Draft

Browser compatibility

See also

• ArrayBuffer