I was working on this for a new site ideal I have, though it might be useful for others. What this does it sent a AJAX POST request every time the as() function is called. Setting the form to run as() onkeyup will essentially make the form submit itself whenever updated. I play to use this as part of an auto submit save system.

You could also eave the method and action of a form blank and have it run this with an onclick on the submit button, submitting the form only when they want to but keeping them on the page.

UPDATE: demo of this working available at the URL.