Debugging JavaScript by Using Breakpoints

by kirupa   |   15 December 2012

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:

Going Further (or Backwards?)

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.

Getting Help

If you have questions, need some assistance on this topic, or just want to chat - post in the comments below or drop by our friendly forums (where you have a lot more formatting options) and post your question. There are a lot of knowledgeable and witty people who would be happy to help you out

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Kirupa Chinnathambi
I like to talk a lot - A WHOLE LOT. When I'm not talking, I've been known to write the occasional English word. You can learn more about me by going here.

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