Can you describe the main difference between a .forEach loop and a .map() loop and why you would pick one versus the other?
Apr 23, 2022
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map():
The map() method receives a function as a parameter. Then it applies it to each element and returns an entirely new array. This means that it returns a new array that contains an image of each element of the array.
forEach():
The forEach() method receives a function as an argument and executes it once for each array element. However, instead of returning a new array like map(), it returns undefined.
Since the main difference between them is whether or not there is a return value, you would want to use map() to make a new array and use forEach() just to map over the array.
