Function count calls

Question

I\'m a beginner with JavaScript so please be patient =)

I am trying to write a function that counts the number of times it is called. What I have so far is a functi

Answer 1

A one liner option:

const counter = ((count = 0) => () => count++)()

Usage example:

> counter()
0
> counter()
1
> counter()
2
> counter()
3
> counter()
4
> counter()
5
> counter()
6