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      1 /**
      2  * Subscriber
      3  */
      4 function Subscriber() {
      5 }
      6 
      7 Subscriber.prototype = {
      8 	receive: function(message) {
      9 	}
     10 }
     11 
     12 /**
     13  * Publisher
     14  */
     15 function Publisher() {
     16 	this._subscribers = [];
     17 }
     18 
     19 Publisher.prototype = {
     20 	publish: function(message) {
     21 		for(var i=0; i<this._subscribers.length; i++) {
     22 			var subscriber = this._subscribers[i];
     23 			subscriber.receive(message);
     24 		}
     25 	},
     26 	add: function(subscriber) {
     27 		this._subscribers.push(subscriber);
     28 	}
     29 }