In Firefox, I use Firebug which allows me to view every http request my ajax calls are making. I\'ve switched over my development to Chrome and am liking it so far. My onl
Update
Chrome changed how to inspect requests and suggests now to use the Catapult Netlog Viewer with the logs exported from chrome://net-export/
chrome://net-export/
More Info
Old Chrome Versions
You also may use this link in Chrome for more detailed information than the inspector did it.
chrome://net-internals/#events
This shows the log of all requests of the browser while open
In the step 5 of Phil, "Resources" is no longer available in the new version of the Chrome. You need to click the page icon just beside the Ajax page listed in the bottom pane with the columns of Name, Method, Status, ...
Then it will show you more panels where you will find the error messages.
The most up-to-date answer to this is: they are listed under the 'Network' button in the developer tools, no longer under 'Resources' like it used to be.