React — What is React?

React is a JavaScript library for building user interfaces, developed by Facebook. It allows developers to create reusable UI components and manage the state of their application efficiently.

React uses a virtual DOM to optimize rendering and improve performance.

import React from 'react';

function App() {
  return (
    <div>
      <h1>Hello, React!</h1>
    </div>
  );
}

export default App;