Introduction to React

        
        
# Example: Importing React
import React from 'react';
import ReactDOM from 'react-dom';

ReactDOM.render(<h1>Hello, React!</h1>, document.getElementById('root'));
        
      

        
        
# Example: React Component Structure
import React from 'react';

class App extends React.Component {
  render() {
    return <h1>Welcome to React</h1>;
  }
}

export default App;
        
      

        
        
# Example: Virtual DOM in React
const rootElement = document.getElementById("root");
const element = <h1>Hello, React!</h1>;
ReactDOM.render(element, rootElement);
        
      

        
        
# Example: Using useState hook
const [count, setCount] = useState(0);
return <button onClick={() => setCount(count + 1)>Click me: {count}</button>;
        
      

        
        
# Example: JSX syntax in React
const element = <h1>Hello, JSX!</h1>;