This is my doubt after going through
How to send headers while using jsonp proxy?
and
How Ajax call is working in mobile app (PhoneGap), but not in PC b
I think for the development purpose you can disable cross domain policy in your browser as given here.
--disable-web-security
Or
You can setup your dev server to allow cross domain requests as given here or [here]
1.
Add the following header to your response Access-Control-Allow-Origin: *