Result Size: 625 x 664
x
 
<!DOCTYPE html>
<html>
<body>
<form>
  <select id="mySelect" size="4">
    <option>Apple</option>
    <option>Pear</option>
    <option>Banana</option>
    <option>Orange</option>
  </select>
</form>
<br>
<button onclick="myFunction()">Remove option with index "2"</button>
<script>
function myFunction() {
  var x = document.getElementById("mySelect");
  x.remove(2);
}
</script>
</body>
</html>