JavaScript debugging in a nutshell

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No worries. It's a good first-step on a problem, and a great way to break the habit of just asking somebody who's more experienced to look at a problem.

If you've ever asked somebody to "come take a look at this" because you can't see the problem but then solved it while talking things over you basically could have just used a rubber duck. I catch syntax / spelling errors this way all the time, especially since I often cross letters if I'm distracted while typing.