npm react router dom
$ npm install --save react-router-domnpm react router dom
$ npm install --save react-router-domroute react
import React from "react";
import {
BrowserRouter as Router,
Switch,
Route,
Link
} from "react-router-dom";
export default function App() {
return (
<Router>
<div>
<nav>
<ul>
<li>
<Link to="/">Home</Link>
</li>
<li>
<Link to="/about">About</Link>
</li>
<li>
<Link to="/users">Users</Link>
</li>
</ul>
</nav>
{/* A <Switch> looks through its children <Route>s and
renders the first one that matches the current URL. */}
<Switch>
<Route path="/about">
<About />
</Route>
<Route path="/users">
<Users />
</Route>
<Route path="/">
<Home />
</Route>
</Switch>
</div>
</Router>
);
}
function Home() {
return <h2>Home</h2>;
}
function About() {
return <h2>About</h2>;
}
function Users() {
return <h2>Users</h2>;
}router react
npm install react-router-domreact router
import {
BrowserRouter,
Switch,
Route,
Link,
useRouteMatch,
useParams
} from "react-router-dom";
ReactDOM.render(
<BrowserRouter>
<React.StrictMode>
<Switch>
<Route exact path="/" component={React_chat_app} />
<Route exact path='/:topicId' component={component0}/>
<Route exact path="/your-url" component={component1} />
<Route component={component2} />
</Switch>
</React.StrictMode></BrowserRouter>,
document.getElementById('demo')
);Copyright © 2021 Codeinu
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