I\'m working on a SF2 application that uses a lot of javascript on the front end.
SF2 provides me a good way of building a nice REST app, manage my database with doc
You can use this template or you can study this template and you can based in it.
Is a template application with secured communication via a RestFul API between the client part with AngularJS and the server part with Symfony2.
Another project that you should check is Aisel is open-source CMS for highload projects based on Symfony2 and AngularJS