Concatenates two ArrayBuffers

concat.array.buffers.js

/**
 * Creates a new Uint8Array based on two different ArrayBuffers
 *
 * @private
 * @param {ArrayBuffers} buffer1 The first buffer.
 * @param {ArrayBuffers} buffer2 The second buffer.
 * @return {ArrayBuffers} The new ArrayBuffer created out of the two.
 */
var _appendBuffer = function(buffer1, buffer2) {
  var tmp = new Uint8Array(buffer1.byteLength + buffer2.byteLength);
  tmp.set(new Uint8Array(buffer1), 0);
  tmp.set(new Uint8Array(buffer2), buffer1.byteLength);
  return tmp.buffer;
};

@rashmimhatre100 I am curious now :) Would you mind create a fiddle, and could you take a look at https://jsfiddle.net/fhsn0zg9/10/ ?
@fujinxiang

EDIT: realized you'd need to use this above func with Uint8Array wrapped inputs. That is a bit misleading, but the output will be a brand new allocated ArrayBuffer. See the example code on the fiddle.