show.html.erb

$('.add_activity_btn').click(function(event) {
  event.preventDefault();
    $('#activity_column').append('<%= j render partial: "routines/partial/empty_activities", locals: {activity: @new_activities, routine: @routines} %>');
      $('.new-activity').click(function() {
       $(this).parent().parent().remove();
      });
    });
  });
});