Why use JavaScriptCore in iOS7 if it can't access a UIWebView's runtime?

Question

This is in response to this blog:

http://blog.bignerdranch.com/3784-javascriptcore-and-ios-7/

Thoughts from the iOS devs on SO?

Answer 1

You can implement application logic in JavaScript and used the JS code on iOS and other platforms. This cuts down the work of supporting an app on iOS, Android, Web, etc.

Calatrava is a framework around this idea.