How to write scripts using React?

Question

JavaScript

Hello. Sorry if this is a dumb question, but I really don't understand.
I'm doing a project on React and found this interesting form for a bank card: https://devtutor.ru/veb-razrabotki/formy/adaptivna...
I decided to make one in my project, but I don't understand a few things
: for it you need to make a separate component. And where to paint the logic? In a jsx file or create a separate js file purely for the script of this form?
2) How can I get HTML elements by selectors in JS if I use css modules? After all, the class name will always be with some characters at the end
3) To work, you need to include imask.js. And where to connect it? Obviously not with the script tag in index.html

Answer 1

1) write in jsx. This is what React was created for
2) you can assign a regular class to elements. It's done like this . And use selector with class 3) in component className={`${styles.input} name-input`}name-input