A hash table is a data structure which helps us to quickly find the data by using the keys. Hashtable uses the hash function to generate the indexes sometimes hash function generates the same index for the different data this is called collision

In this tutorial help you learn how a map/dictionary/hash table works underneath the hood by implementing your own version in JavaScript.

Code: https://gist.github.com/benawad/7a71d

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How to Implement a Hash Table in JavaScript | Tutorial for Beginners
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