session storage cnt

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <button onclick="handleClick()">+1</button>
  <i>0</i>
</body>
<script>
  console.log('hi');
  const ielem = document.querySelector('i');
  if (!sessionStorage.cnt) {
    sessionStorage.cnt = new Number(0);
  }

  ielem.innerText = sessionStorage.cnt;
  function handleClick() {
    ielem.innerText = String(++sessionStorage.cnt);
  }

</script>

</html>