All we know that javascript/jquery are client side Script and only run on web browser like Mozilla Firefox.Google chrome.Safari etc.but there is no way to find bug on clientside script,we have to alert at many places to find bug.Now like sever side script we can also debug client side script ,for this web developer tool required of that browser.For exmaple Firebug in Mozilla Firefox.
Steps to add Firebug on your mozilla firefox
Press Ctrl+Shift+A
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