I think
<form action="some.php" method="POST">...</form>
and
$.ajax({
type:POST,
url:some.php,
//...
});
both do the same thing, but I can’t make the latter redirect me to some.php whereas the former automatically load the page after the post is done. Which one to you is more preferred ? Are they really the same ?
The entire point of AJAX is that you aren’t forced to load a different page into the browser when using it.