There are times when I would like to do work with the values in a Javascript object used as a hash map. For example, sometimes I’d like to iterate over the values and perform an action on them, or perhaps check that a value exists in the hash map. In this post, I’ll write a function that inverts the keys and values in a hash map, give a couple of examples in regards to how and why you’d want to do that, and explain the short-comings of the approach.
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