20.Bonfire: Diff Two Arrays

Diff Two Arrays

function diff(arr1, arr2) {
    
function getDiff(arr1, arr2) {
  var newArr = [];
  for (var i = 0; i < arr2.length; i++) {
    if (arr1.indexOf(arr2[i]) === -1) {
      newArr.push(arr2[i]);
    }
  }
  return newArr;
}
  
  var newArr = [];
  newArr.push(getDiff(arr1, arr2));
  newArr.push(getDiff(arr2, arr1));
  console.log(newArr);
  var flat = newArr.reduce(function(a, b) {
  return a.concat(b);
});
  return flat;
}



diff([1, 2, 3, 500], [1, 2, 3, 4, 5]);