Trying to solve symmetric difference using Javascript

Question

I am trying to figure out a solution for symmetric difference using javascript that accomplishes the following objectives:

• accepts an unspecified number of ar

Answer 1

Hey if anyone is interested this is my solution:

function sym (...args) {
  let fileteredArgs = [];
  let symDiff = [];
  args.map(arrayEl =>
    fileteredArgs.push(arrayEl.filter((el, key) =>
      arrayEl.indexOf(el) === key
      )
    )
  );

  fileteredArgs.map(elArr => {
    elArr.map(el => {
      let index = symDiff.indexOf(el);
      if (index === -1) {
        symDiff.push(el);
      } else {
        symDiff.splice(index, 1);
      }
    });
  });

  return (symDiff);
}

console.log(sym([1, 2, 3, 3], [5, 2, 1, 4]));