<html>
<body>
<h2>JavaScript Prompt</h2>
<button onclick="myFunction()">Try it</button>
<p id="demo"></p>
<script>
function myFunction() {
let text;
let person = prompt("Please enter your name:", "Harry Potter");
if (person == null || person == "") {
text = "User cancelled the prompt.";
} else {
text = "Hello " + person + "! How are you today?";
}
document.getElementById("demo").innerHTML = text;
}
</script>
</body>
</html>