জাভাস্ক্রিপ্ট onchange

<!DOCTYPE html>
<html>
<body>

<select onchange="changed(this)">
  <option>লাল</option>
  <option>সবুজ</option>
  <option>নীল</option>
</select>

<p id="message"></p>

<script>
function changed(select) {
  document.getElementById("message").innerHTML =
    select.value;
}
</script>

</body>
</html>