fizzBuzzDrillJS2 created by dtstanley - https://repl.it/Ieut/9

fizzBuzzDrillJS2.js

function fizzBuzz(countTo) {
  console.log("initial countTo = ", countTo);
  
var newCountTo = [];
for (var i =0; i< countTo.length; i++){
  
  //compare countTo[i] to 15 and chg countTo[i] to fizzBuzz
    if (countTo[i]%3 ==0 && countTo[i]%5 ==0){
      newCountTo[i] = 'fizzbuzz';
    }
    //compare countTo[i] to 5 and chg countTo[i] to buzz
    
    else if (countTo[i]%5 ==0){
      newCountTo[i] = 'buzz';
    }
    //compare countTo[i] to 3 and chg countTo[i] to fizz
    else if (countTo[i]%3 ==0){
      newCountTo[i] = 'fizz';
    }
    else {
      newCountTo[i] = countTo[i];
    }
    
    console.log("looped countTo = ", countTo[i]);
    
    console.log("looped newCountTo = ", newCountTo);
    
  }
     return newCountTo;
}

fizzBuzz([1,2,3,4,5,6,7,8,9,10,11,12,13,14,15]);

Worked this one with Marius as an exercise in testing the code; improving the code and understanding better coding.