const array1 = ['a', 'b', 'c', 'x'] const array2 = ['z', 'y', 'x'] // const array1 = ['a', 'b', 'c', 'x'] // const array2 = ['z', 'y', 'x'] function commonArrayValue(arr1, arr2) { for (var i = 0; i < arr1.length; i++) { for (var j = 0; j < arr2.length; j++) { if (arr1[i] === arr2[j]) { console.log('true') return true; } } } console.log('false') return false; } commonArrayValue(array1, array2)