Avoid bugs by understanding hole processing in JS arrays
Avoid hard to debug bugs and flaws by truly understanding how JavaScript handles holes in arrays.
Category: Software Development
Holey JavaScript Arrays
by
AbdulFattaah Popoola
on
Do you know JavaScript arrays can have holes? How are empty slots different from undefined? And how do you differentiate between both?
This article dives into sparse arrays and explains various ways to create them and associated gotchas with usage.
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