How to replace the entire html webpage with ajax response?

Question

Before going to the specific question I need to explain a few basic steps.

First, the application in question deals with the management of appointments online by cus

Answer 1

@JudgeProhet It seems to me that you do not need AJAX request for this purpose. There is no advantage in doing it this way. If the entire page is updated it could be done by an ordinary HTTP request. If you want to use AJAX, you could simply use JavaScript to redirect to new page, which contains appointment details.

$.ajax({
   'type': 'POST',
   'url': '/backend/ajax_save_appointment',
   'data': postData,
   'success': function(response)
   {
      console.log(response);
      // redirect browser to new location
      window.location.href = '/backend/appointment_details';
   },
   'error': function(xhr, status, error)
   {
      console.log('Error on saving appointment:', xhr, status, error);
      // display error message to the user
   }
});