How to determine device type in react?

Question

JavaScript

You need to execute a certain code if a person accessed the site from a mobile phone.
What solution would you recommend, is it enough to determine the width of the screen through window.innerWidth? If so, what width should I start from?
There is another option to use navigator.userAgent
Just if this can be done using JS in a couple of lines, then I would not want to connect some separate library for this task

Answer 1

see how it's done using js inside some library and drink this piece to yourself