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techsnow

JSX & Components

Components

A component is a JavaScript function that returns JSX. Its name must start with a capital letter.

function Header() {
  return (
    <header>
      <h1>TechSnow</h1>
      <nav>Courses · Tutorials · Blog</nav>
    </header>
  );
}

function App() {
  return (
    <div>
      <Header />
      <main>Welcome!</main>
    </div>
  );
}