js is var array code example
Example 1: js check if array
Array.isArray([1, 2, 3]); // true
Array.isArray('asdf'); // false
Example 2: javascript check if array is in array
var array = [1, 3],
prizes = [[1, 3], [1, 4]],
includes = prizes.some(a => array.every((v, i) => v === a[i]));
console.log(includes);