counter hooks

Counter.js

const Counter = ({ defaultValue }) => {
  const [count, setCount] = useState(defaultValue);
  
  const handlePlusOne = () => {
    setCount(count + 1);
  }
  
  return (
    <>
      <div>{count}</div>
      <button onClick={handlePlusOne}>+</button>
    </>
  );
};