var Person = function(name, gender, age) {  this.Name = name;  this.Gender = gender;  this.Age = age;  this.SetName = function(sname) {    this.Name = sname;  }  this.GetName = function() {    return this.Name;  }  this.SetGender = function(sgender) {    this.Gender = sgender;  }  this.GetGender = function() {    return this.Gender;  }};/*静态公用方法*/Person.Play = function() {  alert("这是一个静态方法");}/*Javascript规定，每一个构造函数都有一个prototype属性，指向另一个对象。这个对象的所有属性和方法，都会被构造函数的实例继承。这意味着，我们可以把那些不变的属性和方法，直接定义在prototype对象上。*/Person.prototype.Address = "中华人民共和国";Person.prototype.SayHello = function() {  alert(Person.prototype.Address);}