ArrayBuffer.prototype.byteLength

The byteLength accessor property represents the length of an ArrayBuffer in bytes.

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

Using byteLength

var buffer = new ArrayBuffer(8);
buffer.byteLength; // 8

Specifications

Specification
ECMAScript Language Specification (ECMAScript) # sec-get-arraybuffer.prototype.bytelength

Browser compatibility

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`byteLength`	7	12	4	10	11.6	5.1	4	18	4	12	4.2	1.0