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

I found this short and sweet syntax to match all or some elements between two arrays. For example

// OR operation. find if any of array2 elements exists in array1. This will return as soon as there is a first match as some method breaks when function returns TRUE

let array1 = ['a', 'b', 'c', 'd', 'e'], array2 = ['a', 'b'];

console.log(array2.some(ele => array1.includes(ele)));

// prints TRUE

// AND operation. find if all of array2 elements exists in array1. This will return as soon as there is a no first match as some method breaks when function returns TRUE

let array1 = ['a', 'b', 'c', 'd', 'e'], array2 = ['a', 'x'];

console.log(!array2.some(ele => !array1.includes(ele)));

// prints FALSE

Hope that helps someone in future!