1
// 定义一个猫的类
2
function Cat(description) {
3
// 定义一个事件
4 this.description = description;
5 this.cry = null;
6
}
7// 添加事件
8Cat.prototype.AddHandler = function(handler) {
9
if (this.cry == null) {
10 this.cry = new Array();
11 this.cry[this.cry.length] = handler;
12 } else {
13 this.cry[this.cry.length] = handler;
14
}
15}
16// 定义猫叫的方法
17Cat.prototype.OnCry = function() {
18 alert("Cat:miao miao
.");
19 for (var i = 0;i < this.cry.length; i++) {
20 this.cry[i](this);
21 }
22}
23// 定义一个老鼠类，老鼠对猫的叫感兴趣，所以就注册了cry事件
24function Mouse() {
25}
26Mouse.prototype.Run = function(des) {
27 switch (des.description) {
28 case "laze" :
29 alert("操，你吓我是吧，你能追的上我吗，我就不跑!");
30 break;
31 case "smark" :
32 alert("我日，你来了呀，你NB，我走!");
33 break;
34 }
35}
36var c = new Cat('laze');
37var c2 = new Cat('smark');
38var m = new Mouse();
39c.AddHandler(m.Run);
40c2.AddHandler(m.Run);
41// 先让懒猫先叫
42c.OnCry();
43// 再让NB的猫再叫
44c2.OnCry();
// 定义一个猫的类2
function Cat(description) {
3
// 定义一个事件4
this.description = description;5
this.cry = null;6
}7
// 添加事件8
Cat.prototype.AddHandler = function(handler) {9
if (this.cry == null) {
10
this.cry = new Array();11
this.cry[this.cry.length] = handler;12
} else {13
this.cry[this.cry.length] = handler;14
}15
}16
// 定义猫叫的方法17
Cat.prototype.OnCry = function() {18
alert("Cat:miao miao.");19
for (var i = 0;i < this.cry.length; i++) {20
this.cry[i](this);21
}22
}23
// 定义一个老鼠类，老鼠对猫的叫感兴趣，所以就注册了cry事件24
function Mouse() {25
}26
Mouse.prototype.Run = function(des) {27
switch (des.description) {28
case "laze" :29
alert("操，你吓我是吧，你能追的上我吗，我就不跑!");30
break;31
case "smark" :32
alert("我日，你来了呀，你NB，我走!");33
break;34
}35
}36
var c = new Cat('laze');37
var c2 = new Cat('smark');38
var m = new Mouse();39
c.AddHandler(m.Run);40
c2.AddHandler(m.Run);41
// 先让懒猫先叫42
c.OnCry();43
// 再让NB的猫再叫44
c2.OnCry();
