Can I render warning message if user's browser is not supported?

Question

I am working on a react application and customers want it to show a special message if user\'s old browser does not support (e.g. IE 9).

So

Answer 1

I found a lot of JS scripts to detect user's browser name and version, so I had to mix them to get exactly what I want

public/index.html

This script allows users to proceed if their browser is chrome >= 48 or ie >= 10 or any version of edge. Otherwise it shows a special message asking user to update or change his browser.

You can also customize this script to your needs, modifying isSupported() function.