Map Polyfill 👨‍💻

A map polyfill in JavaScript is a custom implementation of the Array.prototype.map method, which is used to create a new array by applying a given function to each element of an existing array. If the environment does not natively support the map method (such as older browsers or JavaScript engines), the polyfill provides the same functionality.

The features of the map are as follows:
1. Callback function: The method accepts a callback function that is executed for each element in the array.
2. Arguments: The callback function is passed three arguments: the current element, the index of the element, and the array itself.
3. Returns a new array: The method returns a new array with the results of applying the callback function to each element of the original array.
4. Does not mutate the original array: The original array remains unchanged.

In the following video tutorial, we will learn how to create a map polyfill function.