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 latest JavaScript specification standardizes a well-balanced and thoughtful set of features, including the built-in global Iterator, new Set methods, improvements to regular expressions, and more.

You use these functions when you want to find values based on the value in a corresponding cell. Thanks to the newish dynamic array function XLOOKUP (), you now have more power and less confusion.