Javascript Array except(cleanIndex)

// Extend the array object with a function to return all elements of that array, except the ones with the
// indexes passed in the parameter.
// For example:/*from ww  w  . j  a  v  a 2  s .c  om*/
// var array = ['a', 'b', 'c', 'd', 'e'];
// var array2 = array.except([1,3]); => ['a', 'c', 'e']
// The function should accept both array as parameter but also a single integer, like this:
// var array = ['a', 'b', 'c', 'd', 'e'];
// var array2 = array.except(1);
// array2 should contain ['a', 'c', 'd', 'e'];

Array.prototype.except = function (cleanIndex) {
  return this
    .filter((value, index) =>
      (typeof cleanIndex === 'object')
        ? cleanIndex.indexOf(index) === -1
        : index !== cleanIndex);
}

console.log(
  ['a', 'b', 'c', 'd', 'e'].except([0, 1]), // => [ 'c', 'd', 'e' ]
  ['a', 'b', 'c', 'd', 'e'].except(1) // => [ 'a', 'c', 'd', 'e' ]
);