solution

function fizzBuzz(i) {
    if (i%3 === 0 && i%5 === 0){
        return('FizzBuzz');
    } else if (i%3 === 0){
        return('Fizz');
    } else if (i%5 === 0 ){
        return('Buzz');
    } else {
        return(i);
    }
}

for ( var i = 0; i < 101; ++i ) {
    console.log(fizzBuzz(i));
}