Javascript: inspired from actionscript 3 signals

JS Signals

var Signal = function(){}
Signal.prototype = {
		
		init: function(){
			this.listeners = [];
			this.looping = false;
			this.length = 0;
		},
		
		add: function(method, applyOn){
	    if(!method) return;
	    this.listeners[this.length] = {method: method, applyOn: applyOn};
	    this.length += 1;
	  },
	  
	  remove: function(method){
	    if(this.looping){
	      this.listeners[this.listeners.indexOf(method)] = false;
	      this.length -= 1;
	    }else{
	      this.listeners.splice(this.listeners.indexOf(method), 1);
	    }
	  },
	  
	  removeAll: function(){
	    this.listeners = [];
	    this.length = 0;
	  },
	  
	  destroy: function(){
	  	this.removeAll();
	  	delete this.listeners;
	  },
	  
	  dispatch: function(){
	  	var listener;
	    this.looping = true;
	    for(var i = 0; i < this.length; i++){
	      if(typeof this.listeners[i] === "object"){
	      	listener = this.listeners[i];
	      	listener.method.apply(listener.applyOn, arguments);
	       }
	    }
	    this.looping = false;
	  }
	}