function CounterButton(props) {
  // Define state using hooks
  const [count, setCount] = React.useState(0);
  const [show, setShow] = React.useState(true);

  // Return button displaying current state and incrementing state on click
  if (!show) {
    return null;
  }
  return (
    <button onClick={
      () => {
        if (count === 5) {
          setShow(false);
        }
        setCount(count + 1);
      }
    }>
      {count}
    </button>
  )
}


ReactDOM.render(<CounterButton /*key={new Date().getTime()}*/ />, document.getElementById("root"));

setInterval(() => {
  ReactDOM.render(<CounterButton /*key={new Date().getTime()}*/ />, document.getElementById("root"));
}, 2000);