The Code

                
function getValues() {
  let fizzValue = document.getElementById('fizzValue').value;
  let buzzValue = document.getElementById('buzzValue').value;
  let stopValue = document.getElementById('stopValue').value;

  fizzValue = parseInt(fizzValue);
  buzzValue = parseInt(buzzValue);

if (Number.isInteger(fizzValue) == false || Number.isInteger(buzzValue) == false){
    Swal.fire({
      icon: "error",
      title: "Oops!",
      text: "Please enter a valid Fizz and Buzz values",
      backdrop: false,
    });
}



  stopValue = parseInt(stopValue);
  let startValue = 1;

  if (Number.isInteger(stopValue) && stopValue < 5001) {
    let array = generateFizzBuzz(startValue, stopValue);
    displayFizzBuzz(array, fizzValue, buzzValue);
  } else {Swal.fire({
    icon: "error",
    title: "Oops!",
    text: "Please enter a valid stop value",
    backdrop: false,
  });

  }
}

function generateFizzBuzz(start, end) {
  let basketOfNumbers = [];

  for (let number = start; number <= end; number = number + 1) {
    basketOfNumbers.push(number);
  }

  return basketOfNumbers;
}

function displayFizzBuzz(numbers, fizzValue, buzzValue) {
  let results = "";

  for (let i = 0; i < numbers.length; i = i + 1) {
    let currentNumber = numbers[i];

    if (currentNumber % fizzValue == 0 && currentNumber % buzzValue == 0) {
      results += `<tr><td> class="fizzBuzz">FizzBuzz</td></tr>`;
    } else if (currentNumber % fizzValue == 0) {
      results += `<tr><td> class="bg-fizz bolder">Fizz</td></tr>`;
    } else if (currentNumber % buzzValue == 0) {
      results += `<tr><td> class="bg-buzz bolder">Buzz</td></tr>`;
    } else {
      results += `<tr><td> class="bolder">${currentNumber}</td></tr>`;
    }
  }

  


  let tableBody = document.getElementById("results");
  tableBody.innerHTML = results;
}

                
            

the code is structed in three functions

• getValues
• generateFizzBuzz
• displayFizzBuzz

getValues uses your inputed start and end number and converts the string into a number using parseInt. It then passes the numbers to the generateFizzBuzz function to create a the range of numbers and convert them into an array using a for loop that adds 1 until the end number is reached. generateFizzBuzz then returns the array back to getValues sends them to the displayFizzBuzz function. displayFizzBuzz then uses the amount of items in the array to loop through current number and uses an if statement to test what will be displayed in the table body.