[rajeshamara]

Actually it is very easy to debug any javascript error. In IE there is a setting where you can uncheck the Disable Script debugging (Internet Explorer) and in the status bar you will see any javascript error. If you check the checkbox IE will not report any errors. In general during your development you should always uncheck the box.If you double click the javascript status this will exactly report the line number where the javscript error is. I exactly don't know if you see these kind of errors in Chrome and firefox. I know people blame IE but there are quite few nice handy features which are very helpful during development

[bobralian]

There's a lot to say here, but I'll limit my comment to LOL at the idea that IE reports the exact line number of a javascript error.

[thomblake]

The funny thing about this comment is that you think he can use Internet Explorer to check his server-side code.

[expertmind]

Yes, These features are there in Firefox can Chrome. You clearly haven't used these browsers. I will suggest you to google for firebug, and developer tools in Chrome.