Chunky Monkey Doubt

Tell us what’s happening:
The output is as desired, I have put multiple checks to verify also. But the solution is not accepted.

Your code so far

function chunkArrayInGroups(arr, size) {
  // Break it up.
  var a = [];
  var b = [];
  for(var i = 0;i<arr.length;i+=size)
    a = []; 
  return b;

chunkArrayInGroups([0, 1, 2, 3, 4, 5, 6, 7, 8], 4);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/74.0.3729.169 Safari/537.36.

Link to the challenge:

slice returns an array
Which you are then pushing in an array, and then in an array

I suggest you use the browser console to check the values, or you use console.log(JSON.stringify(..) to check

Anyway, you don’t need the if/else statement as:

If end is greater than the length of the sequence, slice extracts through to the end of the sequence ( arr.length ).