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<!DOCTYPE html>
<html>
<body>
<h1>The Element Object</h1>
<h2>The firstChild Property</h2>
<p>Click the button to get the text of the first child node of the select element.</p>
<p><button onclick="myFunction()">Try it</button></p>
<select id="mySelect" size="4"><option>Audi</option><option>BMW</option><option>Saab</option><option>Volvo</option></select>
<p id="demo"></p>
<script>
function myFunction() {
  let text = document.getElementById("mySelect").firstChild.text;
  document.getElementById("demo").innerHTML = text;
}
</script>
</body>
</html>