Why does it give 5 answers, and how can I do either yes or no? Need to find out if there is one number 2 times in a row. And print yes or no?

Question

JavaScript

let arr = [1, 2, 6, 6, 7, 8];
for (let i = 0, j = i + 1; i < arr.length, j < arr.length; i++, j++) {
if (arr[i] === arr[j]) {
console.log(" da");

} else {
console.log("Net");
}
}

Answer 1

const result = arr.some((value, index, array) => value === array[index + 1]);
console.log(result ? 'Да' : 'Нет');