javascript 私有化属性，和公共属性

function TestClassA(name, number) {  

       this.name = name;             //public  

       this.number = number;         //public  

       var account = '';             //private  

       var phone = '13612345678';    //private  

       this.getAccount = function() {  

              return account;  

      }  

       this.setAccount = function (a) {  

              account = a;  

      }  

  }