Learn how JavaScript’s built-in functions like map() and filter(), as well as compose() and chain(), support a more elegant handling of JavaScript arrays.

The ‘Map()’ function in computing provides a powerful tool that enables you to assign a particular function to each item of an iterative thing, like a collection, tuple, or dictionary. When you ...

JavaScript: Map, Filter, Reduce — William S. Vincent; Arrow Functions: Fat and Concise Syntax in JavaScript — Kyle Pennell; JavaScript: Arrow Functions for Beginners — Brandon Morelli; When (and why) ...