How to not show duplicate Google Chrome notifications?

Question

From this javascript question I learnt how to make desktop notifications work in Google Chrome, and decided to implement this on my site.

So every time a certain something happens, I am making a notification show.

The problem is, that most of the time, the user has more than one window open, which can display notifications, causing duplicate notifications.

Is there a way which allows me to not show duplicate Google Chrome notifications?

Thanks.

can't you save them down in a list, and only show them sometimes? — , Apr 29 '14 at 07:44
@BottleofMilk No, as it is site-wide - that is that notifications can basically be triggered by any page, so I can't keep track of them. — Lucas, Apr 29 '14 at 07:44

score 4 · Answer 1 · answered May 25 '16 at 09:57

Using the same solution, solved it by adding a tag property onto my notification instantiation

var notification = new Notification('Notification Title', 
{
  icon: 'http://cdn.sstatic.net/stackexchange/img/logos/so/so-icon.png',
  body: "Hello Earth",
  tag:"uniqueTag"
});

score 1 · Answer 2 · answered Nov 17 '13 at 17:32

I was facing a similar issue where in my Chrome Extension for Eye Rest would show a notification box every 20 minutes and if users don't close the notification box, 20 minutes later another would pop. The way I went about it was to use a callback function with setTimeout to automatically close the notification bar after a given time.

var notification = webkitNotifications.createNotification('48x48.png',"Notification Title","Notification Body");
notification.show();
setTimeout(function(){
notification.cancel();
},2000);

How to not show duplicate Google Chrome notifications?

2 Answers2