tracing javascript error on iPhone webapp

I'm getting a NO_MODIFICATION_ALLOWED_ERR error using a jquery library on an iPhone & iPod (but not the iPad Emulator, Chrome, Firefox or Safari). As I understand it, this error is caused by either manipulating the D开发者_开发技巧OM when its not ready or adding invalid XHTML if strict checking is in force (which it seems to be on iPhone from what I gleaned from other searches).

So, my question is - is it possible to get the JS stacktrace on iPhone so I can identify what bit of my code is causing this problem? I have Xcode and the iPhone SDK on a Mac, but I don't have much experience - so if someone could point to some way to use this it would be great.

Thanks, Kevin.

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for useful debugging on an iOS device, try this: http://phonegap.github.com/weinre/ it may not give you a good stack trace but it will at least let you inspect the app better. some code explaining what's going on might be useful.

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I don't know of any tracing software but maybe - probably stating the obvious - insert some console.error("Error: ") or console.log("Info..") lines in your code?