Form that makes browser redirect when accessed by either a regular form submit or an Ajax request - is this possible?

Question

I have a web page with a form. When the user submits the form, I want the server to make the browser redirect to a different page from the form action. Right now, I am doing

Answer 1

Pass additional parameter to your ajax request for easy identify type of request. When ajax - do not redirect - just send target url, then redirect client side in ajax callback via location.href

like this:

$.post('/controller/action', {formdata}, function (redirect_to) {
    location.href = redirect_to;
});