for(var i=1;i<=100;i++){
    var f = i%3 == 0,
        b = i%5 == 0;
    if(f){
        if(b){
            console.log("FizzBuzz");
        }else{
            console.log("Fizz");
        }
    }else{
       if(b){
           console.log("Buzz");
       }else{
           console.log(i);
       }
    }
}