publish_subscribe
<!DOCTYPE html>
<html>
<head>
<title></title>
</head>
<body>
<script>
var mediator = (function(){
var subscribe = function(channel,fn){
if(!mediator.channels[channel])mediator.channels[channel] = [];
mediator.channels[channel].push( {context: this,callback: fn} );
return this;
};
var publish = function(channel){
if(!mediator.channels[channel])return false;
var args = Array.prototype.slice.call(arguments,null);
for(var i= 0,l = mediator.channels[channel].length; i<l; i++){
var subscription = mediator.channels[channel][i];
subscription.callback.call(subscription.context,args);
};
return this;
};
return {
channels : {},
publish : publish,
subscribe : subscribe,
installTo : function(obj){
obj.subscribe = subscribe;
obj.publish = publish;
}
}
}());
(function(mediator){
function initialize(){
mediator.name = 'dudu';
mediator.subscribe('nameChange',function(arg){
console.log(this.name);
this.name = arg;
console.log(this.name);
});
};
function updata(name){
mediator.publish('nameChange','tom');
}
initialize();
updata()
})(mediator)
</script>
</body>
</html>
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