[JS] - generateRandomKey

generateRandomKey.js

function generateRandomKey(size)
{
  var keyset    = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ$.+-_$';
  var result = [];
  for (var i = 0; i < size; i++) {
    // todo: Math.random has issues and baggage: http://stackoverflow.com/questions/424292/how-to-create-my-own-javascript-random-number-generator-that-i-can-also-set-the
    var rnum = Math.floor(Math.random() * keyset.length);
    result[i] = keyset.substring(rnum, rnum + 1);
  }
  return result.join('');
}