xxxxxxxxxx<html> <body> <h2>Örnek Form</h2> <form action="./submit-username.php" method="post" target="preview"> <label for="username">Username</label><br> <!-- Burada türünü belirtmeden düz bir metin kutusu gösterdim. --> <input id="username" name="username"><br><br> <input type="submit"> </form> </body></html>