Automatic feedback on JavaScript error

Question

Is there a way to get an automatic feedback if an error (even syntax errors) occurs when running a JavaScript on the client side?

I was thinking of something like th

Answer 1

window.onerror = MyFunction(msg,url,line);

we pop up a window with the error details, browser type (i.e. navigator.userAgent), etc. all in fields marked READONLY and inviting the user to Submit them.

We have a checkbox "Don't show this again" which is stored in a session cookie - so if they keep getting errors than can disable the Popup.

Despite the fact that we thought this was "well cool", we get very few reports - and I'm not convinced that that is because we get close to zero runtime errors!