$.extend({     password: function (length, special) {      var iteration = 0;      var password = "";      var randomNumber;      if(special == undefined){          var special = false;      }      while(iteration < length){          randomNumber = (Math.floor((Math.random() * 100)) % 94) + 33;          if(!special){              if ((randomNumber >=33) && (randomNumber <=47)) { continue; }              if ((randomNumber >=58) && (randomNumber <=64)) { continue; }              if ((randomNumber >=91) && (randomNumber <=96)) { continue; }              if ((randomNumber >=123) && (randomNumber <=126)) { continue; }          }          iteration++;          password += String.fromCharCode(randomNumber);      }      return password;    }  });    // How to use  $.password(8);  $.password(12, true);