The latest WebKit nightly build incorporates a second application called Drosera which is a standalone JavaScript debugger. To debug JavaScript, Drosera can connect to a debug server which can be any application using a recent WebKit build, like the latest Safari-WebKit build itself.
After having been attached, Drosera can display any part of JS currently loaded by WebKit. Nice!
technorati tags:webkit, javascript, debugger, macosx