If you are familiar with other languages such as C#, Java, or C++, JavaScript’s map data-structure is similar to a dictionary (dictionary is the equivalent of JavaScript Map in other programming languages). Knowing the concepts of key/value pair data structures in other languages will help you instantly to grasp the basic concepts here. However, if you haven’t touched any of these languages it won’t hurt because will still start from the basics.

Lastly, if you are one of those developers who remain comfortable with objects-as-maps and decided to see if the JavaScript Map can save your day. You are in the right place.