Explain This Like I'm Five

Lama Al Rajih — Wed, 03 Jan 2018 01:00:03 +0000

So, I've been doing freeCodeCamp for a while, and I need an explanation for the following:

function largestOfFour(arr) {
  var results = [];
  for (var n = 0; n < arr.length; n++) {
    var largestNumber = arr[n][0];
    for (var sb = 1; sb < arr[n].length; sb++) {
      if (arr[n][sb] > largestNumber) {
        largestNumber = arr[n][sb];
      }
    }

    results[n] = largestNumber;
  }

  return results;
}

This is the beginner's solution provided by FCC, and I wrote the correct solution, but my code is wrong and I don't understand why there's a need for var results or for var largestNumber. Why can't I return arr[n][sb] as is?

DEV Community: Lama Al Rajih

Explain This Like I'm Five