It's pretty amazing from Safari to plugged in iPhone in iOS6 using the new remote debugging. I have to mention coda2 & diet coda airpreview for iPad specific live debugging too, and Adobe's new edge inspect works well too (I've been using all three today for a responsive iOS site)

http://www.mobilexweb.com/blog/iphone-5-ios-6-html5-develope... (see last point) http://teamsoell.com/andy/dietcoda http://html.adobe.com/edge/inspect/

You can already do this with Safari (on a mac at least). The dev tools in chrome are just the webkit dev tools (maybe with a few changes) so Safari can do all (almost?) of the same things.

iOS6 Safari allows remote debugging: you can open a site up on an iDevice and then connect via Safari on the desktop and use Safari's version of Web Inspector

How about now? http://moduscreate.com/enable-remote-web-inspector-in-ios-6/

Another way to debug web pages with the inspector is to use the iOS 5 emulator with http://www.iwebinspector.com/