abdulloooh/index.html

## index.html
<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>

  <style>
    [aria-hidden="true"] {
  display: none;
  visibility: hidden;
}
  </style>
</head>
<body>
  <span class="js-currentVersion" aria-hidden="true">2.9</span>  //version 2.9 as example
  //the value 2.9 will be changed in new deploys to the latest version which will be greater than the previous

  <script src="script.js"></script>
</body>
</html>

## script.js
(function() {
  // Check permissions
  if ("Notification" in window) {
    var permission = Notification.permission;

    if (permission === "denied" || permission === "default") {
      Notification.requestPermission().then(function(permission) {
        if (permission === "granted") checkVersion();
      });
    } else if (permission === "granted") {
      return checkVersion();
    }

  }

  function checkVersion() {
    // Retrieve current version
    //using localstorage to track version
    var latestVersion = document.querySelector(".js-currentVersion").textContent;
    var currentVersion = localStorage.getItem("version");
    if (currentVersion === null || latestVersion > currentVersion ) {
      displayNotification(
        `Click to see what's new in v${latestVersion}`,
        "link_to_your_icon/or/leave/it/empty/as/it/is/optional",
        "A new version of myAppName is available",
        `https://github.com/link/to/my/app/releases/v${latestVersion}`
      );

      localStorage.setItem("version", latestVersion);
    }
  }

  function displayNotification(body, icon, title, link, duration) {
    link = link || 0; // Link is optional
    duration = duration || 5000; // Default duration is 5 seconds

    var options = {
      body: body,
      icon: icon
    };

    var n = new Notification(title, options);

    if (link) {
      n.onclick = function () {
        window.open(link);
      };
    }

    setTimeout(n.close.bind(n), duration);
  }
}());
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>

	<style>
	[aria-hidden="true"] {
	display: none;
	visibility: hidden;
	}
	</style>
	</head>
	<body>
	<span class="js-currentVersion" aria-hidden="true">2.9</span> //version 2.9 as example
	//the value 2.9 will be changed in new deploys to the latest version which will be greater than the previous

	<script src="script.js"></script>
	</body>
	</html>
	(function() {
	// Check permissions
	if ("Notification" in window) {
	var permission = Notification.permission;

	if (permission === "denied" \|\| permission === "default") {
	Notification.requestPermission().then(function(permission) {
	if (permission === "granted") checkVersion();
	});
	} else if (permission === "granted") {
	return checkVersion();
	}

	}

	function checkVersion() {
	// Retrieve current version
	//using localstorage to track version
	var latestVersion = document.querySelector(".js-currentVersion").textContent;
	var currentVersion = localStorage.getItem("version");
	if (currentVersion === null \|\| latestVersion > currentVersion ) {
	displayNotification(
	`Click to see what's new in v${latestVersion}`,
	"link_to_your_icon/or/leave/it/empty/as/it/is/optional",
	"A new version of myAppName is available",
	`https://github.com/link/to/my/app/releases/v${latestVersion}`
	);

	localStorage.setItem("version", latestVersion);
	}
	}

	function displayNotification(body, icon, title, link, duration) {
	link = link \|\| 0; // Link is optional
	duration = duration \|\| 5000; // Default duration is 5 seconds

	var options = {
	body: body,
	icon: icon
	};

	var n = new Notification(title, options);

	if (link) {
	n.onclick = function () {
	window.open(link);
	};
	}

	setTimeout(n.close.bind(n), duration);
	}
	}());