Jquery observer pattern (single object module)

jquery.observer.js

(function($){
  //-- Observer
  var o = $({});
  
  $.each({
    trigger: 'publish',
    on: 'subscribe',
    off: 'unsubscribe'
  }, function(key, val){
    jQuery[val] = function(){
      o[key].apply( o, arguments );
    };
  });
  

  // Application
  var app = {
    
    customModule: function(){
      var data = 'Some Data!';

      // Publish event
      console.log('Publish event');
      $.publish( 'custom_Event', data );
    },
    
    events: function(){
        // Subscribe on custom event
      $.subscribe('custom_Event', function(e, data){
        $('.box').text(data);
        console.log('Action on event!');
      });
    },
    
    init: function(){
      app.events();
      app.customModule();
    }
  };
  app.init();
  
  

  
})(jQuery);