pubsub javascript/jquery

pubsub.js(javascript)

var pubsub = (function() {
 
    // Storage for topics that can be broadcast 
    // or listened to
    var topics = {};
 
    // An topic identifier
    var subUid = -1;
 
    // Publish or broadcast events of interest
    // with a specific topic name and arguments
    // such as the data to pass along
    function publish( topic, args ) {
 
        if ( !topics[topic] ) {
            return false;
        }
 
        var subscribers = topics[topic],
            len = subscribers ? subscribers.length : 0;
 
        while (len--) {
            subscribers[len].func( topic, args );
        }
 
        return this;
    }
 
    // Subscribe to events of interest
    // with a specific topic name and a
    // callback function, to be executed
    // when the topic/event is observed
    function subscribe( topic, func ) {
 
        if (!topics[topic]) {
            topics[topic] = [];
        }
 
        var token = ( ++subUid ).toString();
        topics[topic].push({
            token: token,
            func: func
        });
        console.log('topics ' , topics);
        return token;
    }
 
    // Unsubscribe from a specific
    // topic, based on a tokenized reference
    // to the subscription
    function unsubscribe( token ) {
        for ( var m in topics ) {
            if ( topics[m] ) {
                for ( var i = 0, j = topics[m].length; i < j; i++ ) {
                    if ( topics[m][i].token === token ) {
                        topics[m].splice( i, 1 );
                        return token;
                    }
                }
            }
        }
        return this;
    }
    return {
    	publish: publish,
    	subscribe: subscribe,
    	unsubscribe: unsubscribe
    };
})();


 
// Subscribers listen for topics they have subscribed to and
// invoke a callback function (e.g messageLogger) once a new
// notification is broadcast on that topic
// var subscription = pubsub.subscribe( "inbox/newMessage", function(eventName, data) {
// 	console.log('eventName ' , eventName);
// 	console.log('data ' , data);
// } );
 
// Publishers are in charge of publishing topics or notifications of
// interest to the application. e.g:
 
// pubsub.publish( "inbox/newMessage", "hello world!" );
 
// // or
// pubsub.publish( "inbox/newMessage", ["test", "a", "b", "c"] );
 
// or
// pubsub.publish( "inbox/newMessage", {
//   sender: "[email protected]",
//   body: "Hey again!"
// });
 
 
// We cab also unsubscribe if we no longer wish for our subscribers
// to be notified
// pubsub.unsubscribe( subscription );
 
// // Once unsubscribed, this for example won't result in our
// // messageLogger being executed as the subscriber is
// // no longer listening
// pubsub.publish( "inbox/newMessage", "Hello! are you still there?" );

pubsub.js(jquery)

var pubsub = (function($) {

    function publish(eventName, data, obj) {
        var object = obj || document;
        $(object).trigger(eventName, data);
    }

    function subscribe(eventName, func, obj) {
        var object = obj || document;
        $(object).on(eventName, function() {
            func(eventName, [].slice.call(arguments, 1));
        });
    }

    function unsubscribe(eventName, obj) {
        var object = obj || document;
        $(object).off(eventName);
    }

    return {
        publish: publish,
        subscribe: subscribe,
        unsubscribe: unsubscribe
    };
    
})($);