buffer
Summary
Read-only. Gets the ArrayBuffer that is referenced by this array.
Syntax
var arrayBuffer = int32Array.buffer;
Examples
The following example shows how to get the ArrayBuffer of the array.
var req = new XMLHttpRequest();
     req.open('GET', "http://www.example.com");
     req.responseType = "arraybuffer";
     req.send();
     req.onreadystatechange = function () {
         if (req.readyState === 4) {
             var buffer = req.response;
             var dataView = new DataView(buffer);
             var intArr = new Int32Array(buffer.byteLength / 4);
             alert(intArr.buffer.byteLength);
         }
     }
Attributions
- Microsoft Developer Network: Windows Internet Explorer JavaScript reference Article