byteLength

Summary

Read-only. The length of the ArrayBuffer (in bytes).

Syntax

var arrayLength = arrayBuffer.byteLength;

Examples

The following example shows how to get the byte length of the ArrayBuffer.

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;

         alert(buffer.byteLength);
         }
     }

Attributions

• Microsoft Developer Network: Article