Create little endians in JavaScript.

toLittleEndian.js

function dec2hex (dec) {
  hex = dec.toString(16);
  if (hex.length < 2) {
    hex = "0" + hex;
  }
  return hex;
}

function toLittleEndian (number, dontPad) {
  var power = Math.floor((Math.log(number) / Math.LN2) / 8) * 8;
  var multiplier = Math.pow(2, power);
  var value = Math.floor(number / multiplier);
  var remainder = number % multiplier;
  var endian = "";
  if (remainder > 255) {
    endian += toLittleEndian(remainder, true);
  } else if (power !== 0) {
    endian += this.dec2hex(remainder);
  }
  endian += this.dec2hex(value);
  if (!dontPad) {
    var padding = 16 - endian.length;
    for (var i = 0; i < padding; i++) {
      endian += "0";
    }
  }
  return endian;
}