Check if an array contains any element of another array in JavaScript

Question

I have a target array [\"apple\",\"banana\",\"orange\"], and I want to check if other arrays contain any one of the target array elements.

For example:

Answer 1

Array .filter() with a nested call to .find() will return all elements in the first array that are members of the second array. Check the length of the returned array to determine if any of the second array were in the first array.

getCommonItems(firstArray, secondArray) {
  return firstArray.filter((firstArrayItem) => {
    return secondArray.find((secondArrayItem) => {
      return firstArrayItem === secondArrayItem;
    });
  });
}