gistfile1.txt

var check_password_compat = function(pw) {
  var ch, code;
  var specialChars = ['-', '_', '?', '!'];
  for (var i = 0; i < pw.length; i++) {
    ch = pw[i];
    code = ch.charCodeAt(ch);
    var isUppercaseLetter = 65 <= code && code <= 90;
    var isLowercaseLetter = 97 <= code && code <= 122;
    var isNumber = 48 <= code && code <= 57;
    var isSpecialChar = specialChars.indexOf(ch) !== -1;

    if (!(isUppercaseLetter || isLowercaseLetter || isNumber || isSpecialChar)) return false;
  }

  return true;
}