Cant access an variable out of a loop? Help please

Tell us what’s happening:
Hey, ive got a problem with this exercise. Exactly with the fact that my code add the biggest values to the array largestNumbers in the loop, BUT when i want to actually extract that variable largestNumbers with its array out of the loop then, well, i cant… I cant understand why, can anybody explain?

Your code so far


function largestOfFour(arr) {
  // You can do this!
  var largestNumbers = [];
  var largest = -100000;
  for (var i = 0; i <= arr.length; i++) {
    for (var j = 0; j < arr[i].length; j++) {
      if (arr[i][j] > largest) {
        largest = arr[i][j];        
      }
    }
    largestNumbers.push(largest);
    largest = -100000;
    console.log(largestNumbers);     // here it shows the array correctly [25,48,21,-3]
  }
console.log(largestNumbers);           // here i cant acces it, help pls
  return largestNumbers;

}

largestOfFour([[17, 23, 25, 12], [25, 7, 34, 48], [4, -10, 18, 21], [-72, -3, -17, -10]]);

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User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36.

Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-algorithm-scripting/return-largest-numbers-in-arrays/

Is that the comparison operator you want here? What happens when i is arr.length?

Hey, thanks. i corrected it to for (var i = 0; i < arr.length; i++) and now it works.