I'm not sure if this answers your question, but you've been able to execute native javascript in your apps since iOS 7: https://developer.apple.com/library/mac/

I'm not sure if this answers your question, but you've been able to execute native javascript in your apps since iOS 7: https://developer.apple.com/library/mac/documentation/Carbon/Reference/WebKit_JavaScriptCore_Ref/_index.html https://developer.apple.com/library/mac/documentation/Carbon...