module 3 prototypes

Question 1

What is Array.prototype.filter useful for?

Answer 1

The filter() method creates a new array with all elements that pass the test implemented by the provided function.

Question 2

What is Array.prototype.map useful for?

Answer 2

The map() method creates a new array populated with the results of calling a provided function on every element in the calling array.

Question 3

What is Array.prototype.reduce useful for?

Answer 3

for executing the same function in all the elements of an array and getting a single result back