How do I get the exact answer with random number in division operator?

Question

So I create one math game play the division operator. So there's a question where user need to answer those question. so these number was generate randomly from 1 to 10. So my question is I want those answer are return to whole number. If possible it return without remainder. How do we control the random number. I not done my research yet and this what I do.

<form action="" class="from" id="form">
    <h3 class="score" id="score">Score : 0</h3>
    <h1 class="question" id="question">1 + 1</h1>
    <input type="text" class="input" id="input" placeholder="Enter Your Answer" autofocus autocomplete="off"/>
    <button class="button">Submit</button>
    <button class="reset" id="resetScore" onclick="deleteScore()">Reset</button>
</form>

<script>
  const a = Math.round(Math.random() * 10);
  const b = Math.round(Math.random() * 10);

  // question declared
  const questionDisp = document.getElementById("question");
  // form declared
  const form = document.getElementById("form");
  // input declared
  const input = document.getElementById("input");
  // score declared
  const score1 = document.getElementById("score");
  // reset declared
  const reset = document.getElementById("resetScore");

  let score = JSON.parse(sessionStorage.getItem("score")); //JSON.parse to convert the string to number

  if (!score) {
    score = 0;
  }

  score1.innerText = `Score : ${score}`;
//   questionDisp.innerText = `What is ${a} / ${b} = `;

  // answer must not negative
  if (a >= b){
    const answer = a / b;
    questionDisp.innerText = `What is ${a} ÷ ${b} = `;
  }else if (b >= a){
    answer = b / a;
    questionDisp.innerText = `What is ${b} ÷ ${a} = `;
  }

  // answer for question declared
//   const answer = a / b;

  form.addEventListener("submit", () => {
    const userAns = +input.value; //plus to convert string to number
    if (userAns === answer) {
      score++;
      ScoreUpdate();
    } else {
      score--;
      ScoreUpdate();
      showAlert();
    }
  });
  


  function ScoreUpdate() {
    sessionStorage.setItem("score", JSON.stringify(score));
  }

  function showAlert() {
    alert("WRONG ANSWER");
  }

  function deleteScore() {
    sessionStorage.clear();
    score = 0;
    ScoreUpdate();
    location.reload();
  }
  
</script>

Answer 1

Your question is not clear,but i assume you want an Integer to return as an output, not a decimal numbers

If you want to check whether the result is an integer or not, you can use this

console.log(Number.isInteger(80/8)) console.log(Number.isInteger(5/3))

More about Number.isInteger() here