Slice and Splice I can't get to pass the last task "The second array should remain the same after the function runs". Please help

Tell us what’s happening:

Your code so far

function frankenSplice(arr1, arr2, n) {
  // It's alive. It's alive!
  let dog = arr2.slice(0)
  for(var a = 0;a < arr1.length;a++){
     arr2.splice(n, 0,arr1[a]);
    dog = arr2
  return dog;

frankenSplice([1, 2, 3], [4, 5, 6], 1);

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Link to the challenge:

The purpose of the challenge is to avoid changing the input arrays and to show you that you can use slice instead of splice to avoid mutating the array :slight_smile:

thank you sir.I very much appreciate you help