Question

For which purpose the array "map()" methods is used ?

a) It used for mapping the elements of another array into itself.

b) It passes each data-item of the array and returns the necessary mapped elements.

c) It passes the data-items of an array into another array.

d) It passes every element of the array on which it is invoked to the function you specify, and returns an array containing the values returned by that function.

Answer 1

Answer: D

Reason: The "map()" method is one of the built-in methods of the JavaScript that is used for mapping the data-items of the array, which can be used later for some other purpose. It passes every element of the array on which it is invoked to the function we specify, and returns an array containing the values returned by that function.