Write a function that splits an array (first argument) into groups the length of size (second argument) and returns them as a multidimensional array

Question

I am working through a javascript problem that asks me to:

Write a function that splits an array (first argument) into groups the length of size (second argument) an

Answer 1

This is my solution:

function chunkArrayInGroups(arr, size) {
  var acum=[];
  for(i=0;i