for (var x=1;x<=100;x++){
  switch (true){
    case (x % 5 === 0 && x % 3 === 0):
      console.log("FizzBuzz");
      break;
    case (x % 3 === 0):
      console.log("Fizz");
      break;
    case (x % 5 === 0):
      console.log("Buzz");
      break;
    default:
      console.log(x);
  }
}