jQuery Mobile在表单提交上加载外部PHP

Question

I am working on an Android jQuery Mobile application using PhoneGap, which does not allow me to use PHP. So I want to load an external PHP page that I'm hosting somewhere else. Basically this is what I'm looking for:
The user fills out the form then clicks on Submit
The external PHP page is loaded, and then it goes back to the confirmation page in my app.

Is this possible? I have been trying to do this for days and still cannot get it to work. It will either just load the external PHP page, or just the confirmation page, or it will load the confirmation page before the PHP page which leaves the users looking at a blank page. Any help would be greatly appreciated!

This is what I currently have:

$("#inputform").submit(function() {
    alert("test");
    $.getJSON("http://www.somewhere.com/sendemail.php");
    $.mobile.changePage("confirmation.html");
    return false;
});

Answer 1

What if you change the page to confirmation.html in the success event of the ajax request?

$.ajax({
    url: 'http://www.somewhere.com/sendemail.php',
    success: function(data, textStatus, XMLHttpRequest)
    {
        //do some work
        $.mobile.changePage("confirmation.html");
    }
});

OR with getJson

$.getJSON('http://www.somewhere.com/sendemail.php', function(data) {
    //do some work
    $.mobile.changePage("confirmation.html");
}

Here after a successful request to sendemail.php you will be able to do anything with the returned data and then direct to the confirmation.html page.