Code
<!DOCTYPE html>
<html>
    <body>

        <form action="auto.htm" method="get" autocomplete="on" onsubmit="alert('Submitted!');return false;">
            First name:<input type="text" name="fname"><br>
            E-mail: <input type="email" name="email"><br>
            <input type="submit">
        </form>

    </body>
</html>


Result