How to debug a jQuery application remotely on client's browser/OS/system?

I have developed a web app (that uses jQuery) which works just fine for me but isn't working for one of my users. I've tried replicating the problem matching his browser/OS but it is of no use. The application works for me but not for him. He has tried with a lot of browsers: Chrome/Firefo开发者_运维百科x/IE but it doesn't work in any for him. The only clue I have is that he says all his computers have German version of Windows installed. I wonder how that can be a cause.

Is there any tool that can dump JavaScript/HTML errors and email it to me? Or any script/extension for helping me remotely debug the issue? Help is appreciated.

The web app BTW is http://visualwebsiteoptimizer.com/ in case it helps.

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If he's trying it in Chrome or Firefox, have him press Ctrl+Shift+J and that will bring up the Javascript Error Console. You can then ask him to copy-paste you whatever errors it might be having.

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You could try Copilot or some other remote-help solution. That way you will have complete control over the client's computer and I think that will be the easiest way to debug this.

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Ask your client to create a trace with Fiddler or FiddlerCap. Then you can replay the trace on your local system and see if the client received all the files or if certain http requests had errors.

Tracing instructions: Fiddler, FiddlerCap

If you're not familiar with Fiddler check out the video or the slides for the "Become a Web Debugging Virtuoso with Fiddler" session from this year's PDC conference.

Hope this helps some.