ArrayBuffer.prototype.byteLength

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

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.

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

• ArrayBuffer