I have API to return alerts total number. I would like to using web socket (real time) to show this number in header (number > 0 - the same Facebook notification). I am using Restangular to call API. Help me about demo to using it. Thanks.
maybe u should use socket.io
http://socket.io/get-started/chat/
then yo cna use this wrapper
https://github.com/btford/angular-socket-io
you should "build" own socket io whic will push new event to you app and inside angular you just "listen to this event"
io.on('notification', function(data) {
$scope.notifications = data;
})