[jQuery] Re: ajax request form in one page, is it possible ?

I understand that ive to use - X-Requested-With then I did search a
bit about that and I found this code,

$.ajaxSetup({
headers: {"X-Requested-With":"Ajax"}
});

but I still don't understand how should I send the parameters to the
same file and get them in the server side (PHP)
I hot to get answer,

thanks!