HTML5 Game Engine with an integrated editor that runs in the browser

From: <a href="http://www.reddit.com/r/gamedev/comments/yr71h/html5_game_engine_with_an_integrated_editor_that/" rel="nofollow">http://www.reddit.com/r/gamedev/comments/yr71h/html5_game_en...</a><p>"To answer your questions: By "Android/ios native" we mean running a JavaScript Interpreter (or JITer) on the mobile device with direct bindings to OpenGL ES. It works like CocoonJS or AppMobi DirectCanvas (or iOSImpact like you mentioned)."

in what form is the js compiled for ios/android? some sort of encapsulated browser?