<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Object Data Type Example</title>
</head>
<body>
<script>
  let person = {
    firstName: 'John',
    lastName: 'Doe',
    age: 30,
    email: 'john.doe@example.com'
  };
</script>
</body>
</html>