Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<body>

<form>
  <select id="mySelect" size="4">
    <option>Apple</option>
    <option>Orange</option>
    <option>Pineapple</option>
    <option>Banana</option>
  </select>
</form>

<p>Click the button to display the number of options in the drop-down list.</p>

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
function myFunction() {
    var x = document.getElementById("mySelect").options.length;
    document.getElementById("demo").innerHTML = "Found " + x + " options in the list.";
}
</script>

</body>
</html>