how can i use the session storage, internal storage and drag and drop?🤷

Question

https://code.sololearn.com/W8Jqlez8Q46D/?ref=app

Answer 1

https://www.sololearn.com/learn/HTML/2214/
https://www.sololearn.com/learn/HTML/2197/

Answer 2

You need to learn PHP for that

Answer 3

For drag and drop I've forgotten