Patrick Mueller is the man behind the Weinre tool – remotely inspect and debug mobile web applications. Here is a video of him talking about Weinre at PhoneGap Day US 2012.
If you would like to know more about Weinre and how to debug mobile web applications I have a few post on it. You can start from here.
And if you do not like setting up Weinre and working with servers you can have a look at Adobe Shadow which is a tool developed by Adobe on top of Weinre, functions similarly but you do not have to set up the dirty part. You can start from here.