At NFJS Venkat Subramaniam, author with Andy Hunt of "Practices of an Agile Developer," shared his pragmatic approach to some of the important technica...

Firebug is an essential Firefox extension for web designers and developers. You are able to quickly target any element on a page to see the markup, the CSS, the layout, and the DOM in an instant. Not only can you see all of this juicy information, you can edit and see the results directly in the brow...

This episode will show you how to debug a rails app using ruby-debug: set a breakpoint, inspect variables, change the code and more.

RJS and AJAX can be difficult to debug. Many times you don't get any error message in the browser. Learn different techniques for solving these tricky problems in this episode.

I have created a 15 minute screencast that will show you how to Debug JavaScript with Firebug. I cover a number of concepts such as using the console, interactive debugger and timer features of the Firebug extension for Firefox. If you haven’t tried Firebug yet, I’m sure that this screencast will...

A one-hour introduction to FusionDebug and FusionReactor, given at the Toronto CFUG

The stack trace can be a very useful tool when it comes to debugging. Learn the ins and outs of how the stack trace works in this episode. Note: I am using an older version of the Rails bundle here so it might be a little different than yours. The command in the newer version is called Install Plugin...

Access logs from stack traces and other sources.

Examine values and types of variables while you debug.

Step through and over functions as you debug.