Filter Polyfill 👨‍💻

A filter polyfill in JavaScript is a custom implementation of the Array.prototype.filter method. This method is used to create a new array containing all elements from the original array that pass a test implemented by a provided function. The polyfill ensures compatibility for environments that do not natively support the filter method.

The features of the map are as follows:

1. Callback function: The method accepts a callback function that is applied to each element of the array.
2. Arguments to the callback: The callback function receives 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 containing only the elements that satisfy the condition in the callback function.
4. Does not modify the original array: The original array remains unchanged.

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