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.

Learn how to use the JavaScript map method to efficiently transform and manipulate arrays. This tutorial breaks down how map works, with easy-to-follow examples to help you master this powerful ...

Learn JavaScript's Array Reduce method in 100 seconds. Take many things and reduce them down to one thing. In just 100 ...

The JavaScript method, Array.map(f) is a pure function in that it takes a function as a parameter. That last point about pure functions warrants further exploration. First-order functions vs. pure ...