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Summary - Router basics

Set up a two-route skeleton with home and about pages.

Summary - Router basics

In this group you learned what React Router is, defining routes, and navigation with Link/NavLink. Now you can build basic SPAs.

The recipe: wrap with BrowserRouter, define Route inside Routes, build the menu with NavLink. Add a path="*" route for 404. These four steps set up a working router.

In the next step you'll write an App component combining NavBar + Routes.

Practice App router + navbar

Complete the skeleton. Write an App component. Inside <BrowserRouter>, first <NavBar />, then inside <Routes> define two routes: <Route path="/" element={ '{ <Home /> }' } />, <Route path="/about" element={ '{ <About /> }' } />. Export it. (Assume all components are imported.)

Starter code

App.jsx
// Write the App component here

Sample solution

App.jsx
function App() {
  return (
    <BrowserRouter>
      <NavBar />
      <Routes>
        <Route path="/" element={<Home />} />
        <Route path="/about" element={<About />} />
      </Routes>
    </BrowserRouter>
  );
}

export default App;

Questions and answers

Review the lesson questions together with their answers. To test yourself, solve the lesson interactively.

1 Which reloads the page?

  • <a href> Correct answer
  • <Link to>
  • <NavLink to>
  • <Route>

Explanation: a href reloads the page.

2 Match the router recipe

Term Meaning
BrowserRouter wraps
Routes container
Route route
NavLink menu

All lessons in Intermediate

1 Custom hook basics

  1. What is a custom hook?
  2. useToggle
  3. usePrevious
  4. Summary - Custom hook basics

2 Advanced custom hooks

  1. useLocalStorage
  2. useFetch
  3. useDebounce
  4. Summary - Advanced custom hooks

3 Context deep dive

  1. Context separation
  2. Context + useReducer
  3. Default value and error
  4. Summary - Context deep dive

4 useReducer pattern

  1. The reducer pattern
  2. Action types
  3. Composition
  4. Summary - useReducer pattern

5 Cart management

  1. Project: Cart management
  2. Cart reducer
  3. Cart context
  4. Add product UI

6 useMemo

  1. What is useMemo?
  2. Dependency control
  3. Pitfalls
  4. Summary - useMemo

7 useCallback

  1. What is useCallback?
  2. Sibling re-render
  3. useMemo vs useCallback
  4. Summary - useCallback

8 React.memo

  1. What is React.memo?
  2. Prop comparison
  3. Custom comparator
  4. Summary - React.memo

9 Performance project

  1. Project: Performance
  2. Expensive computation
  3. Stable handler
  4. Memoized list

10 Router basics

  1. What is React Router?
  2. Defining routes
  3. Link and NavLink
  4. Summary - Router basics

11 Advanced router

  1. URL parameters
  2. Nested routes
  3. Programmatic navigation
  4. Summary - Advanced router

12 Multi-page app

  1. Project: Multi-page app
  2. Layout and router
  3. List and detail
  4. Navigation and 404

13 Layout components

  1. The layout pattern
  2. Sidebar and header
  3. Layout with Outlet
  4. Summary - Layout components

14 Error boundary

  1. What is an error boundary?
  2. Class component structure
  3. Fallback UI
  4. Summary - Error boundary

15 Suspense and lazy

  1. What is React.lazy?
  2. Suspense boundary
  3. Multiple boundaries
  4. Summary - Suspense and lazy

16 Portals

  1. What is a portal?
  2. Modal example
  3. Event bubbling
  4. Summary - Portal

17 Advanced useRef

  1. useRef and computation
  2. Measuring
  3. forwardRef
  4. Summary - Advanced useRef

18 RTL tests

  1. React Testing Library
  2. render and screen
  3. Firing events
  4. Summary - RTL tests

19 Dashboard project

  1. Project: Dashboard
  2. Layout and route
  3. Stats widget
  4. Add via modal

20 Intermediate final

  1. Challenge: useFetch hook
  2. Challenge: Theme provider
  3. Challenge: Memoized list
  4. Challenge: Routed cart