useState is a hook that allows you to add local state to functional components. Each time the state changes, the component re-renders.

Example of useState:

          {`import React, { useState } from "react";
          
          function Counter() {
            const [count, setCount] = useState(0);
            
            return (
              <div>
                <h1>Counter: {count}</h1>
                <button onClick={() => setCount(count + 1)}>Increment</button>
              </div>
            );
          }
          
          export default Counter;`}