How to find if there are javascript errors in the page using selenium rc

I am using Selenium RC and I would like to know if there were any JavaScript开发者_开发百科 errors in the page.

Is there any Selenium API to check if there are any JavaScript errors?

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I'm not sure there's anything in the Selenium API that can do this. How about putting something like this after all your other JavaScript:

document.write('<!--JSOK-->');

then asserting that it exists from your test script? If the JavaScript has already thrown an error then <!--JSOK--> won't be rendered to the DOM.

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I know it's not Selenium, but I've found that for javascript FireBug is the best hands down imho. I know you are going for the "all in one" tool, but I'd consider making an exception in this case.