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

<p>Select a new car from the list.</p>

<select id="mySelect" onchange="myFunction()">
  <option value="Audi">Audi
  <option value="BMW">BMW
  <option value="Mercedes">Mercedes
  <option value="Volvo">Volvo
</select>

<p>When you select a new car, a function is triggered which outputs the value of the selected car.</p>

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

<script>
function myFunction() {
    var x = document.getElementById("mySelect").value;
    document.getElementById("demo").innerHTML = "You selected: " + x;
}
</script>

</body>
</html>



Result:
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