Saving Drag and Drop Code from Youtube Video: https://youtu.be/86m4yO5ZivQ
Youll have to edit server.js and put in your own mongodb connection. Run node server.js npm start
To get things online. It will save your coordinates where you dropped things off last and when you come back (hitting refresh or restart browser), it restores to that last position as well demostrating full stack saving and retreiving data backend to frontend.