Publish-Subscribe Vanilla JS

gistfile1.js

 //Fork of https://github.com/shichuan/javascript-patterns/blob/master/jquery-patterns/pubsub-plugin.html
 // No need JQuery
 var o = {};          
 (function(d){
     // the topic/subscription hash
     var cache = {};
      
     d.publish = function(/* String */topic, /* Array? */args){
         cache[topic] && [].forEach.call(cache[topic], function(element){
             element.apply(d, args || []);
         });
     };

     d.subscribe = function(/* String */topic, /* Function */callback){    
         if(!cache[topic]){
             cache[topic] = [];
         }
         cache[topic].push(callback);
         return [topic, callback]; // Array
     };

      // Disconnect a subscribed function for a topic.
    d.unsubscribe = function(/* Array */handle){    
        // handle: Array - The return value from a $.subscribe call.
        var t = handle[0];
        cache[t] && [].forEach.call(cache[t], function(element,idx){
            if(element == handle[1]){
                cache[t].splice(idx, 1);
            }
        });
    };
})(o);

 var event = o.subscribe('test', function(){console.log('test');});
 o.publish('test');
 o.unsubscribe(event);
 o.publish('test');