ITERATORS

Question 1

What are Higher-order functions?

Answer 1

Higher-order functions are functions that accept other functions as arguments and/or return functions as output.

Question 2

What are JavaScript functions ?

Answer 2

are first-class objects, so they have properties and methods like any other object.

Question 3

What does .map() ?

Answer 3

When .map() is called on an array, it takes an argument of a callback function and returns a new array!

Question 4

What are .map() , .forEach(), .filter() ?

Answer 4

iterator methods