No matter how well you write your JavaScript, given its scripty nature, mistakes will happen. The mistakes that you run into will often be subtle. A great time saver when trying to figure out why your JavaScript isn't working is the ability to set breakpoints and step through your code line by line. Firebug makes it very easy for you to do that, and in this video, I show you how.
Hit Play below to get get rolling:
If you don't want to use breakpoints, you can always fall back to the old methods of using console.log or peppering alert() functions throughout your code.
Just a final word before we wrap up. If you have a question and/or want to be part of a friendly, collaborative community of over 220k other developers like yourself, post on the forums for a quick response!
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