Javascript Memoization Explanation?

Question

Reading an example from a book, can someone explain how the function call to fibonacci takes in the argument \'i\' when the function itself doesn\'t declare any parameters?<

Answer 1

There is a self-calling function that returns the function with the identifier fib which is then assigned to the identifier fibonacci. This way you can create a private variable memo which is only accessible by the function. So var fibonacci in fact is function(n){...}.