function something(arr) {

var ctr = [],

ans = 0;

for(var i = 0; i < 10; i++) {

ctr.push(0);

}

​

for(var i = 0; i < arr.length; i++) {

ctr[arr[i] - 1]++;

console.log(ctr[arr[i] - 1])

if(ctr[arr[i] - 1] > ctr[ans]) {

ans = arr[i] - 1;

}

}

return ans + 1;

}

console.log(something([1, 2, 3, 2, 2, 8, 1, 9]))