//get the value from the Page
                      function getValues() {
                        // get values from the page
                        let fizz = document.getElementById("fizzValue").value;
                        let buzz = document.getElementById("buzzValue").value;

                        fizzValue = parseInt(fizz);
                        buzzValue = parseInt(buzz);

                        if (Number.isInteger(fizzValue) && Number.isInteger(buzzValue)) {
                          // call generateNumbers
                          let fbArray = fizzBuzz(fizzValue, buzzValue);
                          // call displayNumbers
                          displayData(fbArray);
                        } else {
                          alert("You must enter an integer");
                        }
                      }

                      //generate numbers from fizz to the buzz
                      function fizzBuzz(fizzValue, buzzValue) {
                        let returnArray = [];
                        // get all numbers from start to buzz
                        for (let i = 1; i <= 100; i++) {
                          // execute until i = buzz
                          if (i % fizzValue == 0 && i % buzzValue == 0) {
                            returnArray.push("FizzBuzz");
                          } else if (i % fizzValue == 0) {
                            returnArray.push("Fizz");
                          } else if (i % buzzValue == 0) {
                            returnArray.push("Buzz");
                          } else {
                            returnArray.push(i);
                          }
                        }
                        return returnArray;
                      }

                      function fizzBuzzB(fizzValue, buzzValue) {
                        let returnArray = [];
                        let fizz = false;
                        let buzz = false;

                        for (let i = 1; i < 100; i++) {
                          fizz = i % fizzValue == 0;
                          buzz = i % buzzValue == 0;

                          switch (true) {
                            case fizz && buzz: {
                              returnArray.push("FizzBuzz");
                              break;
                            }
                            case fizz: {
                              returnArray.push("Fizz");
                              break;
                            }
                            case buzz: {
                              returnArray.push("Buzz");
                              break;
                            }
                          }
                        }
                        return returnArray;
                      }

                      // display the numbers and mark even numbers bold
                      function displayData(fbArray) {
                        // get the table body from the page
                        let tableBody = document.getElementById("results");
                        // get template row
                        let templateRow = document.getElementById("fbTemplate");
                        // clear the table
                        tableBody.innerHTML = "";
                        for (let i = 0; i < fbArray.length; i += 5) {
                          let tableRow = document.importNode(templateRow.content, true);

                          // grab tds and put in an array
                          let rowCols = tableRow.querySelectorAll("td");

                          rowCols[0].classList.add(fbArray[i]);
                          rowCols[0].textContent = fbArray[i];

                          rowCols[1].classList.add(fbArray[i + 1]);
                          rowCols[1].textContent = fbArray[i + 1];

                          rowCols[2].classList.add(fbArray[i + 2]);
                          rowCols[2].textContent = fbArray[i + 2];

                          rowCols[3].classList.add(fbArray[i + 3]);
                          rowCols[3].textContent = fbArray[i + 3];

                          rowCols[4].classList.add(fbArray[i + 4]);
                          rowCols[4].textContent = fbArray[i + 4];

                          tableBody.appendChild(tableRow);
                        }
                      }      
                    
                

The code is structured in multiple functions.

FizzBuzz

FizzBuzz is a Javascript program to solve the FizzBuzz challenge.