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

Just one more solution

var a1 = [1, 2, 3, 4, 5]
var a2 = [2, 4]

Check if a1 contain all element of a2

var result = a1.filter(e => a2.indexOf(e) !== -1).length === a2.length
console.log(result)