Code piece for easily self-notification implementation

web-local-push.js

// the function which enables us to send notification to the user in every 30 seconds
function randomNotification() {
  const notifTitle = 'Title here';
  const notifBody = `Body here...`;
  const notifImg = 'http://image-url-here/static/image.png';
  const options = {
    body: notifBody,
    icon: notifImg,
  };
  new Notification(notifTitle, options);
  setTimeout(randomNotification, 30000);
}

// assume we have a button
const btn = document.querySelector("button");

// check if button exists, and attach `onclick` event
if (btn) {
  btn.onclick = function() {
    // get the permission for the notification
    Notification.requestPermission().then((result) => {
    if (result === 'granted') {
      randomNotification();
    }
  });
  };
}