How is cross-platform development done with React and React Native?

Question

Cross-platform

Hello. Question for knowledgeable people: "How is the development of cross-platform applications on React & React Native?". Specifically: "Is it really necessary to make a copy of it in React Native in order to create a mobile version of the site? Or does an application written in React Native run everywhere? What is the best way to write cross-platform applications?"

Answer 1

No, to make a mobile version of the site, you do not need to make a copy of it on React Native. They are not related to each other at all. Nothing is clear from your question.