FizzBuzz

 // Wire up event handler for click event
 document.getElementById("btnFB").addEventListener("click", fizzBuzzDirect)
 //main Function
 function fizzBuzzDirect() {
     //Step 1 Get Data
     let fizz = Number(document.getElementById("txtFizzBuzzIn1").value);//Value of text box 1
     let buzz = Number(document.getElementById("txtFizzBuzzIn2").value);//Value of text box 2
     //Step 2 Run data thru function
     let output = [];
     for (let loop = 1; loop <= 100; loop++) {       //Start at 1; loop 100 times; add 1 each time
         if (loop % fizz == 0 && loop % buzz == 0) { //checking for divisible by both 3 & 5
             output[loop - 1] = "FizzBuzz";
         } else if (loop % fizz == 0) {              //checking for divisible by 3
             output[loop - 1] = "Fizz";
         } else if (loop % buzz == 0) {              //checking for divisible by 5
             output[loop - 1] = "Buzz";
         } else {
             output[loop - 1] = loop;                //If neither, it stay a number
         }
     }
     //Loop over the output array but skip every 10      //For loop for  arry output
     let finalOutput = "";
     for (let i = 0; i <= output.length - 1; i += 10) {
         finalOutput += renderTemplate(i, output);
     }

     //Step 3 My result output
     document.getElementById("pFizzBuzzOut").innerHTML = finalOutput;
 }

 function renderTemplate(num, output) {         //Function for adding to a table
     let template = `<tr>
   <td>${output[num]}</td>
   <td>${output[num + 1]}</td>
   <td>${output[num + 2]}</td>
   <td>${output[num + 3]}</td>
   <td>${output[num + 4]}</td>
   <td>${output[num + 5]}</td>
   <td>${output[num + 6]}</td>
   <td>${output[num + 7]}</td>
   <td>${output[num + 8]}</td>
   <td>${output[num + 9]}</td>
 </tr>`
     return template;

 }
 // function prevents input of all letters into input field
 function isNumber(evt) {                                     //parameter of event
     evt = (evt) ? evt : window.event;                        //evt variable = event of the key press
     var charCode = (evt.which) ? evt.which : evt.keyCode;
     if (charCode > 31 && (charCode < 48 || charCode > 57)) {
         return false;
     }
     return true;
 };