জাভাস্ক্রিপ্ট requestIdleCallback

<!DOCTYPE html>
<html>
<body>

<button onclick="start()">চালু</button>
<button onclick="cancel()">বাতিল</button>

<p id="result">ওয়েটিং</p>

<script>
let idle;

function start() {
  idle = window.requestIdleCallback(() => {
    result.textContent = "কার্যকর";
  });

  result.textContent = "সিডিউল";
}

function cancel() {
  window.cancelIdleCallback(idle);
  result.textContent = "বাতিল";
}
</script>

</body>
</html>