javascript模拟继承
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 ); |
郑重声明:本站内容如果来自互联网及其他传播媒体,其版权均属原媒体及文章作者所有。转载目的在于传递更多信息及用于网络分享,并不代表本站赞同其观点和对其真实性负责,也不构成任何其他建议。