Filling an array (part 1).js

/*
DESCRIPTION:
We want an array, but not just any old array, an array with contents!

Write a function that produces an array with the numbers 0 to N-1 in it.

For example, the following code will result in an array containing the numbers 0 to 4:

arr(5) // => [0,1,2,3,4]
Note: The parameter is optional. So you have to give it a default value.
*/

// My solution:

const arr = N => Array.from({length: N },(_ ,index) => index);