Difference between two arrays - solution 3

algo_mid_one_3.js

const arrayOne = [1, 4, 5, 7, 3, 8, 1, 9];
const arrayTwo = [3, 7, 1, 12, 9, 5, 24, 16];

function diffArrayInt(array1, array2) {
  // 1. Return a new array that will follow this rules
  return (
    // 2. Combine two arrays
    [...array1, ...array2]
    // 3. Check each element if it's unique return in a new array
    .filter((item) => !array1.includes(item) || !array2.includes(item))
  );
}

console.time('Start Algo 3');
console.log(diffArrayInt(arrayOne, arrayTwo));
console.timeEnd('Start Algo 3'); // Start Algo 3: 0.48486328125ms