js 实现多事件绑定

function createFunction(obj,func){

var args=[];

if(!obj){ obj=window;}

for(var i=2;i<arguments.length;i++){

args.push(arguments[i])

}

return function(){

obj[func].apply(obj,args);

}

}

function eventDemo(){

}

eventDemo.prototype={

show:function(){

if(this.events){

for(var i=0;i<this.events.length;i++){

this.events[i]();

}

}

},

attachEvents:function(eventHandler){

if (!this.events) this.events=[];

this.events.push(eventHandler);

}

}

var obj=new eventDemo();

var userName1="jake1";

var userName2="jake2";

function objOnShow1(userName){

alert(userName+" execute a onShow event");

}

function objOnShow2(userName){

alert(userName+" execute a onShow event");

}

obj.attachEvents(createFunction(null,"objOnShow1",userName1));

obj.attachEvents(createFunction(null,"objOnShow2",userName2));

obj.show();