function count_digits(d, n) {
let count = 0;
   for (let index = 0; index <= n; index++) {
       const a = index.toString();


       if (d == a) {
           count++;
       }
        if (a.length > 1) {
            var b = a.split('');

            for (let index = 0; index < b.length; index++) {
                const element = b[index];
                if (d == element) {
                    count++;
                }
            }
       }
   }

   return count;
}
console.log(count_digits(2, 34));