useParams
// React Router v6: hook returns obj w key/values of params from URL
import { Routes, Route, useParams } from 'react-router-dom';
function Profile() {
// 'https://www.url.com/users/:userId'
let { userId } = useParams();
// user profile...
}
function App() {
return (
<Routes>
<Route path='users'>
<Route path='/:userId' element={<Profile />} />
<Route path='me' element={/* other */} />
</Route>
</Routes>
);
}