Greetings!
I was wondering how I could use javascript code on an iPhone application I was developing. this tutorial illustrated how to use windowScriptObjects for Co
This functionality is not exposed via a public API.
Like rpetrich said, this is Non-Public API so the windowScriptObject route might not be the best.
I did find this link though, which helped me a lot: https://discussions.apple.com/message/7731057?messageID=7731057
Basically, if you can keep your interactions between HTML and Objective-C entirely based on the user clicking links ( a href="" ) then all of this can be easily communicated between the two.
While it would be nice, I agree, to exchange variables and call methods at will, this already gives you a lot to work with. Hope that's useful!