Browser notification only once for all open tabs on the site

Question

I have a news site that runs C # ASP.Net MVC 5.0, and I want to push a notification to the client browser when the administrator adds / edits or deletes the news.
so I added a signalr script to my template, which is used on all pages.

_Layout.cshtml

var notificationsHub = $.connection.notificationHub;
$.connection.hub.start();
jQuery(function($) {
    notificationsHub.client.Toast = function (title, body) {
        var options = {
            body: body,
        };
        var notification = new Notification(title, options);
    };
});

and added this code to the page, which is redirected after adding / editing / deleting news.

<script>
    $.connection.hub.start().done(function() {
        notificationsHub.server.toast('@NotificationHub.Type.ToString()', '@Html.Raw(NotificationHub.Title)', '@Html.Raw(NotificationHub.Body)');
    });
</script>

when I add / edit / delete news, it works fine, but the problem is that it causes notifications about all open tabs on my site. Is there a trick to avoid this and show only one browser notification per site?

Answer 1

OK fooobar.com/questions/784196/....
tag :

var notificationsHub = $.connection.notificationHub;
$.connection.hub.start();
jQuery(function($) {
    notificationsHub.client.Toast = function (title, body) {
        var options = {
            body: body,
            tag: 'my-unique-id',
        };
        var notification = new Notification(title, options);
    };
});

Answer 2

URL. . " - jquery?" , .