javascript模拟继承

   js 本没有继承,只用js语法来实现继承效果
    function Person(age, name)
        {
            this.name =name;
            this.age = age;
        }
        Person.prototype.sayHi = function () {
            alert("age="+this.age+",name"+this.name);
        }
        var p1 = new Person(12, "ff");
        var p2 = new Person(21, "fffs");
        alert(p1.sayHi == p2.sayHi);

        function Father(name, age)
        {
            this.name = name;
            this.age = age;
        }
        Father.prototype.sayHi = function () {
            alert(this.name+","+this.age);
        }

        function Son(name,age,gender)
        {
            this.gender = gender;
            //call调用自己本身
            Father.call(this, name, age);//"继承" "父类"的成员
        }
        // Son.prototype = Father.prototype; //可以用父类的方法(这里有指针的问题)
        Son.prototype = new Father(); //得到父类对象
        Son.prototyp.fungame = function () { }; //prototype也是一个对象
        var f1 = new Father("JamesZou", 29);
        f1.sayHi();
        var s1 = new Son("jameszou", 1, true);