<!DOCTYPE html>
<html>
<body>
Select your favorite fruit:
<select>
<option id="myOption" value="apple">Apple</option>
<option value="orange">Orange</option>
</select>
<p>Click the button to change the value of the apple option.</p>
<button type="button" onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("myOption").value = "newValue";
document.getElementById("demo").innerHTML = "The value of the value attribute of the 'apple' option has been changed from 'apple' to 'newValue'.";
}
</script>
</body>
</html>