How to convert div to textarea and back with preservation?

Question

JavaScript

Good afternoon! Please tell me how to convert div to textarea, make text edits and convert again from textarea to div?
code: https://jsfiddle.net/Medvedoc/trvy2u8u/

Answer 1

Isn't it easier to use contenteditable?
https://jsfiddle.net/Stalk/trvy2u8u/2/