Chunky Monkey - code works on REPL.it, not on freecodecamp. Why?

Tell us what’s happening:
I think that I have written a possible solution, which works when I run the code on repl.it, but whenever I try it on the freecodecamp site, it doesn’t work. I have been reviewing the code over and over, but I cannot seem to find the problem. Any ideas? Thanks!

Your code so far

function chunkArrayInGroups(arr, size) {
  var twoDimArray = [];
  var times = arr.length / size;
  var pointer1 = 0;
  var pointer2 = size;
  for (i = times; i > 0; i--) {
    var tempArr = arr.slice(pointer1, pointer2);
    twoDimArray.push(tempArr);
    pointer1 += size;
    pointer2 += size;
  } console.log(twoDimArray);
}

chunkArrayInGroups(["a", "b", "c", "d"], 2);

Your browser information:

Your Browser User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:60.0) Gecko/20100101 Firefox/60.0.

Link to the challenge:
https://www.freecodecamp.org/challenges/chunky-monkey

That works. Thanks! So should I never use console.log in freecodecamp when I expect some output? Is the output area not the equivalent of the console?