React does not use web components, but only simulates them through appendChild?

Question

React

I looked at the principle of how React works, and as I understand it, it builds the entire house tree through createElement and appendChild, and does not create new unique html elements for the house?

Answer 1

createElement + appendChild, just create new unique html elements for the house.
React || vue || Angular || etc. do not use "magic", they are also mere mortals who render pages with createElement + appendChild.
Google virtual DOM js and you will understand what problem React solves.