Dynamic Route 

//============Main.js======

import React from "react";
import {BrowserRouter as  Router,Link,Routes,Route} from "react-router-dom";

import HeaderNav from "./HeaderNav";

import Home from "./Home";
import About from "./About";
import Contact from "./Contact";
import PageNotFound from "./PageNotFound";
import Profile from "./Profile";

export default function () {

    return<>
        <Router>
            <HeaderNav/>
            <Routes>
                <Route path={"/"} element={<Home/>}/>
                <Route path={"/about"} element={<About/>}/>
                <Route path={"/contact"} element={<Contact/>}/>
                <Route path={"/User/:username"} element={<Profile/>}/>
                <Route path={"*"} element={<PageNotFound/>}/>
            </Routes>
        </Router>
    </>

} 




import React from "react";
import { useParams } from "react-router-dom";

export default function Profile() {
    const { username } = useParams(); // Extract the dynamic username from the URL

    return (
        <>
            <h1>Profile Page</h1>
            <div>
                <h2>Welcome, {username}!</h2>
                <p>This is the profile page for <strong>{username}</strong>.</p>
            </div>
        </>
    );
}




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