Looking for code for draggable html box/div

Question

although we got to learn how to make a Draggable content / object how do I make them switch if I have 2 boxes with each having 2 div inside them

Answer 1

use like this:
<div draggable="true">Content Here</div>

Answer 2

using this I could make the div's Draggable.. however what I am unable to achieve is if I have 2 such div's and each one of them have 1 Image within them.. how do I make the images interchange without using a 3rd div..