//原型模式
       function Person(name, age, job) {
            this.name = name;
            this.age = age;
            this.job = job;
  
//            this.sayName = function () {
//                alert(this.name);
//            };   
        }
  
        Person.prototype.sayName = function () {
            alert(this.name);
        };
//调用方法
var p=new Person("姓名","年龄","工作");
//javascript/6975