ASSIGNMENT
You will be provided with an initial array (the first argument in the destroyer function),
followed by one or more arguments. Remove all elements from the initial array
that are of the same value as these arguments.

SOLUTION

function destroyer(arr) {

  var args = Array.from(arguments).slice(1);      // create a new array from array-like object (arguments), i.e. (arr) and
                                                  // place its values into a new array (var args). Apply .slice method on
                                                  // the new array (args), extracting part of it, starting from index 1
                                                  // and place it in args again.
                                                  // (in our case, [2, 3] will be its values now, as [1,2,3,1,2,3] has index 0.
                                                  // (from var args [[1, 2, 3, 1, 2, 3], 2, 3])
  return arr.filter(function (elements) {
    return !args.includes(elements);              // if the element being checked is NOT in the args array (we check it by
    });                                           // putting ! sign in front of args (!args)), return true.
   }                                              // arr.filter creates a new array and places there each element
                                                  // for which callback function (!args.includes(elements)) returns true
                                                  // MDN web docs: filter() calls a provided callback function once for each element in an array,
                                                  //  and constructs a new array of all the values for which
 destroyer([1, 2, 3, 1, 2, 3], 2, 3);             // callback returns a value that coerces to true.