Or at least iOS? How much modification of the code would be required?
Hi,Aradalf.
You can use javaScriptBinding to publish cocos2d-html5 project to iOS/Android.
First , know that how to publish cocos2d-x project to iOS/Android.
[http://www.cocos2d-x.org/wiki/How_to_create_a_multi-platform_project_in_one_command_line?project_id=cocos2d-x]
Second , reference TestJavascript project in cocos2d-x.