React Router is used to define multiple routes in the application.
Routing is a process in which a user is directed to different pages based on their action or request.
React Router Installation
react-router-dom: It is used for web applications design.
https://www.npmjs.com/package/react-router-dom
$ npm install --save react-router-dom
C:\reactdev\myreactdev>npm install --save react-router-dom
src/index.js
import React from 'react';
import ReactDOM from 'react-dom';
import { Route, Link, BrowserRouter as Router, NavLink, Switch} from 'react-router-dom'
import App from './App';
import About from './About'
import Contact from './Contact'
import Notfound from './notfound'
const routing = (
<Router>
<div>
<h1>React Router Example</h1>
<ul>
<li>
<NavLink to="/" exact activeStyle={
{color:'red'}
}>Home</NavLink>
</li>
<li>
<NavLink to="/about" exact activeStyle={
{color:'green'}
}>About</NavLink>
</li>
<li>
<NavLink to="/contact" exact activeStyle={
{color:'magenta'}
}>Contact</NavLink>
</li>
</ul>
<Switch>
<Route exact path="/" component={App} />
<Route path="/about" component={About} />
<Route path="/contact" component={Contact} />
<Route component={Notfound} />
</Switch>
</div>
</Router>
)
ReactDOM.render(routing, document.getElementById('root'));
public/index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>React App</title>
</head>
<body>
<div id="root"></div>
</body>
</html>
src/App.js
//src/App.js
import React from 'react'
class App extends React.Component {
render() {
return (
<div>
<h1>Home</h1>
</div>
)
}
}
export default App
src/About.js
//src/About.js
import React from 'react'
class About extends React.Component {
render() {
return <h1>About</h1>
}
}
export default About
src/Contact.js
//src/Contact.js
import React from 'react'
import { Route, Link } from 'react-router-dom'
const Contacts = ({ match }) => <p>{match.params.id}</p>
class Contact extends React.Component {
render() {
const { url } = this.props.match
return (
<div>
<h1>Welcome to Contact Page</h1>
<strong>Select contact Id</strong>
<ul>
<li>
<Link to="/contact/1">Contacts 1 </Link>
</li>
<li>
<Link to="/contact/2">Contacts 2 </Link>
</li>
<li>
<Link to="/contact/3">Contacts 3 </Link>
</li>
<li>
<Link to="/contact/4">Contacts 4 </Link>
</li>
</ul>
<Route path="/contact/:id" component={Contacts} />
</div>
)
}
}
export default Contact
notfound.js
//notfound.js import React from 'react' const Notfound = () => <h1>Not found</h1> export default Notfound
