Displaying username upon hovering over event in event calendar

Hello everyone.
I created an event calendar using jquery and fullcalendar. I need to add the following feature to it: 
Every time my cursor hovers over this event on a particular date in the calendar, a bubble should pop up showing the name of the user who created it. My calendar is active-directory login enabled so there is a specific username attached to everyone who creates an event.
My calendar is a 2-page application. The first page is a login page and after the user logs in, he/she can access my event calendar. (I built the calendar using this tutorial: http://www.c-sharpcorner.com/UploadFile/krishnasarala/event-calendar-using-j-query/) 
Any help would be appreciated. Thanks!