Drag Events on mobile devices

Drag Events on mobile devices

Hello,
I am investigating different technologies so I am completely new to JQuery Mobile.  My understanding is that this API should allow a web page to behave exactly the same on a tablet as it does on a desktop.  I see on the main page of jquerymobile.com there is an example from Codiqa that allows a user to drag elements onto the "tablet" canvas.
 
This works great on a desktop, but when I try dragging the elements on a tablet, it doesn't drag them it just moves the page up and down.  Am I misunderstanding what JQuery Mobile actually does or should I be able to drag these items with my finger on a tablet as if i was using a mouse on a desktop?
 
Thank you to anyone who can clear up my understanding about this technology.