<!DOCTYPE html>
<html>
<body>
<p>Click the button to get the text of the third child node (index 2) of the select element.</p>
<select id="mySelect" size="4"><option>Audi</option><option>BMW</option><option>Saab</option><option>Volvo</option></select><br><br>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
var c = document.getElementById("mySelect").childNodes;
document.getElementById("demo").innerHTML = c[2].text;
}
</script>
</body>
</html>