Sort-2

arr.sort() function accept function as optional argument for sorting. Here is how it sort the array in asc order.
arr.sort(function(a, b) { return a - b; })

<!DOCTYPE html>
<html>
<head>
<title>Welcome to LearnKode - A code learning platform</title>
</head>
<body>
<script>
var arr= [4, 2, 5, 1, 3];
arr.sort(function(a, b) {
  return a - b;
});
document.write(arr);
</script>
</body>
</html>

Output