Add JavaScript validation to project that usually does not include JS

Question

If I create a PHP project in Zend Studio 8 it checks and validates JS. Showing syntax errors etc. Now I'm creating an Android app with phonegapp. That means the project is an Android Project, not a PHP project, so eclipse/Zend Studio treats it different. The project uses JavaScript aswell, however in this project type there is no JavaScript section in the preferences, and when I make a mistake in the JS code only time I find out is on runtime :(