Drag and drop

Question

Please who understands the drag and drop code?
There are so many codes here

Answer 1

You learn the Drag and Drop from the following web link!
➡https://www.w3schools.com/html/html5_draganddrop.asp
➡https://developer.mozilla.org/en-US/docs/Web/API/HTML_Drag_and_Drop_API
➡https://www.tutorialspoint.com/html5/html5_drag_drop.htm

Answer 2

thanks AL Araf