Routes (navigation links)

Some thoughts on how Routers, Routes, Switches etc work

Create a new React app using the command npx create-react-app <app name>

Create a new file called routes-example.jsx and copy the code below into it

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

function RouterExample() {
  return (
    <Router>
      <div>
        <ul>
          <li>
            <Link to="/"><h1>Home</h1></Link>
          </li>
          <li>
            <Link to="/about">About</Link>
          </li>
          <li>
            <Link to="/topics">Topics</Link>
          </li>
        </ul>

        <hr />
        <Switch>
            <Route exact path="/" component={Home} />
            <Route path="/about" component={About} />
            <Route path="/topics" component={Topics} />
            <Route component={NoMatch} />
        </Switch>
      </div>
    </Router>
  );
}

function Home() {
  return (
    <div>
      <h2>Home</h2>
    </div>
  );
}

function About() {
  return (
    <div>
      <h2>About</h2>
    </div>
  );
}

function NoMatch() {
    return (
      <div>
        <h2>Nothing found here...</h2>
      </div>
    );
}
  
  function Topics({ match }) {
  return (
    <div>
      <h2>Topics</h2>
      <ul>
        <li>
          <Link to={'${match.url}/rendering'}>Rendering with React</Link>
        </li>
        <li>
          <Link to={`${match.url}/components`}>Components</Link>
        </li>
        <li>
          <Link to={`${match.url}/props-v-state`}>Props v. State</Link>
        </li>
      </ul>

      <Route path={`${match.path}/:topicId`} component={Topic} />
      <Route
        exact
        path={match.path}
        render={() => <h3>Please select a topic.</h3>}
      />
    </div>
  );
}

function Topic({ match }) {
  return (
    <div>
      <h3>{match.path + '/' + match.params.topicId}</h3>
    </div>
  );
}

export default RouterExample;

Here is my package.json so that you can get the required dependencies

Run the code using the command npm start

MAN - Software Development

Routes (navigation links)

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