index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        let name = prompt("What is your name?");
        let myName = name.toUpperCase();

        alert(`Hello ${myName}! Welcome to my Website.`);

    </script>

</body>
</html>
	<!DOCTYPE html>
	<html lang="en">
	<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	</head>
	<body>
	<script>
	let name = prompt("What is your name?");
	let myName = name.toUpperCase();

	alert(`Hello ${myName}! Welcome to my Website.`);

	</script>

	</body>
	</html>