How to Execute a JavaScript when a user writes something in an <input> field

Here Writes something in the text field to trigger a function.

index.html

Example: HTML

<!DOCTYPE html>
<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>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Form Events Attribute
Uploaded by:	Admin