<!DOCTYPE html>
<html>
<head>
<body>
<title> hello world</title>
<script>
alert("hello world");
</script>
</body>
</head>
</html>
<!DOCTYPE html>
<html>
<head>
<body>
<title> hello world</title>
<script>
alert("hello world");
</script>
</body>
</head>
</html>