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.

Calculating a sum can be as simple as iterating over an array and adding each of the elements together. Implement the function named sumNumbers that takes an array of numbers as an argument, and ...

The Rest parameter is a feature in JavaScript that allows you to represent an indefinite number of arguments as an array. It is denoted by three dots (...) followed by the name of the array that will ...