<html>
<body>
<p>Write something in the text field to trigger a function.</p>
<input type="text" id="myInput" oninput="myFunction()">
<p id="demo"></p>
<script>
function myFunction() {
let x = document.getElementById("myInput").value;
document.getElementById("demo").innerHTML = "You wrote: " + x;
}
</script>
</body>
</html>