// %
function mod(num, by) {
    var tmp_num = num;
    while (tmp_num - by >= 0) {
        tmp_num -= by
    }
    return tmp_num;
}

function fizzbuzzMod (limit) {
    for (var i = 1; i <= limit; i++) {
        if      (i % 15 === 0) console.log('fizzbuzz');
        else if (i % 3  === 0) console.log('fizz');
        else if (i % 5  === 0) console.log('buzz');
        else                   console.log(i);
    }
}