|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33 |
js 本没有继承,只用js语法来实现继承效果<br> 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); |
原文：http://www.cnblogs.com/yzenet/p/3585291.html