Seek and Destroy (arr) not returning all elements

JavaScript
1

Tell us what’s happening:

Your code so far

function destroyer(arr) {
  // Remove all the values
  return arr;
}

destroyer([1, 2, 3, 1, 2, 3], 2, 3);


now if you return arr ; then it must give output as
[1,2,3,1,2,3],2,3
but it only give output as
[1,2,3,1,2,3]
why?