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Discussion on: Let's re-implement JavaScript's Array.map method!

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rpearce profile image
Robert Pearce • Edited

Nice article, and I'm actually about to make a video on this exact same subject!

I noticed that when you do the for loop, there's i = 0, instead of let i = 0, and this could result in the creation (or mutation) of a global variable. Funny enough, i is a global variable on dev.to at the moment, and it's value is 0! But once you run the code above, it gets updated.

Good job on this article!

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J.C. Hiatt Author

Nice catch!