AngularJS does not update after value change

Question

My intention is to update the navigation bar after the user login. Basically, it should change Login to Hi, {{usr.username}} right after the login.

Answer 1

Try calling $scope.$digest() right after changing $scope.usr value. Anyway, notice that you call to Firebase to get the user is asynchronous, so I wouldn't put dependent code after this call, but inside the callback.