AI solution for Interview Question on BFE.dev
15. `Array.prototype.forEach()` vs `Array.prototype.map()`

In summary, forEach() loops through each item in an array and allows you to perform an action on that item. On the other hand, map() loops through each item in an array and returns a new array with the results of calling a provided function on every element in the calling array.

So, if you want to modify the original array, use forEach(), and if you want to create a new array based on the original one, use map().