const array1= ["cheese", "dough", "sauce", "pepperoni"]
const array2= ["mozzarella", "peppers", "chicken", "cheese"]
const isIncluded = array1.some(value => array2.includes(value))
// true
const values = array1.filter(value => array2.includes(value))
// "cheese"const found = arr1.some(r=> arr2.includes(r))// How to check if array includes a value from another array in JavaScript
const includesAny = (arr, values) => values.some(v => arr.includes(v));
includesAny([1, 2, 3, 4], [2, 9]); // true
includesAny([1, 2, 3, 4], [8, 9]); // falselet superSet = ['B', 'C', 'A', 'D'];
let subSet = ['D', 'C'];
let mixedSet = new Set([...superSet, ...subSet]);
let isSubset = mixedSet.size == superSet.lengthconst found = arr1.some(r=> arr2.indexOf(r) >= 0)