AJAX fail in Mobile App

AJAX fail in Mobile App

Anyone build a Web App with jQuery where the AJAX had no response in the web app but code worked outside the web app?

1. When we run the code outside a web app it works.

2. We add the mainfest and include it in the header and AJAX (jQuery) gets no returned value from the outside world.
<html manifest="/member.appmanifest">

Anyone conquered this in a web app? (We saw comments about outside web apps but they did not appear to help.) Note all the AJAX and jQuery run fine... the issue is with the AJAX call.