Javascript Array Map Filter. Because both map and filter return Arrays we can chain these functions together to build complex array transformations with very little code. But it also takes a second argument.
Map returns an array with the same length filter as the name implies it returns an array with less items than the original array. The JavaScript Map method is a method that can create a new array by calling a function for each array element. Instead they return a new array of the results.
Instead they return a new array of the results.
Map returns an array with the same length filter as the name implies it returns an array with less items than the original array. This method returns a new array containing the elements that passes a certain test performed. The map method will be covered in the next step. Because both map and filter return Arrays we can chain these functions together to build complex array transformations with very little code.
