js对象原型.html

<!DOCTYPE html>
<html>
    <body>
        <p id="demo1"></p>
        <p id="demo2"></p>
        <p id="demo3"></p>

        <script>
            function Person(first,last,age,eyecolor){
                this.firstName = first;
                this.lastName = last;
                this.age = age;
                this.eyeColor = eyecolor;
            }

            Person.prototype.fname = function(){
                return this.firstName;
            }

            var myFriend = new Person("Gyoku","Mei",21,"black");
            document.getElementById("demo1").innerHTML = "My friend is " + myFriend.fname();

            document.getElementById("demo2").innerHTML = Object.getOwnPropertyNames(myFriend);

            Object.defineProperty(myFriend, "fullName",{get : function(){return this.firstName+" "+this.lastName;}});
            document.getElementById("demo3").innerHTML = myFriend.fullName;
        </script>
    </body>
</html>