/*
* 中介
**/
var Mediator = function(){
var self = this;
var _messageObj = {};
this.Register = function(key,obj){
//注冊(cè)中介
_messageObj[key] = obj;
},
this.Send = function(key,message){
//根據(jù)客戶Key發(fā)送信息給客戶
if(_messageObj[key]){
_messageObj[key].Receive(message);
}
}
}

/*
* 客戶父類(lèi)
**/
var MessageBase = function(key,mediator){
mediator.Register(key,this); //注冊(cè)中介
}

/*
* 自由主題1
**/
var MessageObj1 = function(key,mediator){
MessageBase.call(this,key,mediator); //繼承父類(lèi)
this.Receive = function(message){
//接收中介消息
alert("Object1 " + message);
}
}

/*
* 自由主題2
**/
var MessageObj2 = function(key,mediator){
MessageBase.call(this,key,mediator); //繼承父類(lèi)
this.Receive = function(message){
//接收中介消息
alert("Object2 " + message);
}
}

var med; //中介者
var init = function(){
//客戶代碼
med = new Mediator();
new MessageObj1("m1",med);
new MessageObj2("m2",med);
};

window.onload = function(){
init();
}

<a href="javascript://" onclick="med.Send('m1','Good');">test1</a>
<a href="javascript://" onclick="med.Send('m2','GoodBoy');">test2</a>