Help:Return Largest Numbers in Arrays

l don’t know what’s wrong with my code , it passed two tests and failed the two more .

function largestOfFour(arr) {
var largest =0;
var new_arr =[];
for (var i=0;i<arr.length;i++){
  for(var x=0;x<arr.length;x++){
    if (largest < arr[i][x]){
      largest = arr[i][x];

largestOfFour([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35,37, 39], [1000, 1001, 857, 1]]);

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Challenge: Return Largest Numbers in Arrays

Link to the challenge:

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

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var largest =0;
//this line won't work for several reasons
//1. The highest number can be less than 0

//2. It is created outside the loop so it would save values 
//from any array and save them pass the new iteration which you do not want

//3. You currently are not returning a value

The naming convention you are using is not correct for JavaScript so instead of new_arr you would have newArr

ok thanks it is working now

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