Just for curious, I am asking this question. I have gone through this following website and their functionality with Google Maps inspired me.
https://batchgeo.com/map/top-100-twitter-users
So tried to have a look at their javascript code by trying to debug the site with firebug. I could not able to find their javascript where they are rendering the markers and grouping the charts. Now can anyone tell me the ways to hide the javascripts.