Example 2.1

import React, { useRef } from 'react';

function App() {
  // Step 1: Create a ref named inputRef using useRef()
  const inputRef = useRef(null);

  // Step 2: Define a function focusInput to focus the input element
  const focusInput = () => {
    // Step 3: Access the current property of inputRef to focus the input element
    inputRef.current.focus();
  };

  return (
    <div>
      <h1>Focus Input Example</h1>
      {/* Step 4: Attach inputRef to an input element using the ref attribute */}
      <input type="text" ref={inputRef} />
      {/* Step 5: Call focusInput function when the button is clicked */}
      <button onClick={focusInput}>Focus Input</button>
    </div>
  );
}

export default App;