Immetti la tua e-mail:

<script language="JavaScript"> <!-- Hide function test1(form) { if (form.text1.value == "") alert("Prego, entra una stringa!") else { alert("Hi "+form.text1.value+"! Formulario riempito correttamente!"); } } function test2(form) { if (form.text2.value == "" || form.text2.value.indexOf('@', 0) == -1) alert("Indirizzo e-mail non valido!"); else alert("OK!"); } // --> </script> <form name="first"> Immetti il tuo nome:<br> <input type="text" name="text1"> <input type="button" name="button1" value="Controllo immissione" onClick="test1(this.form)"> <P> Immetti la tua e-mail:<br> <input type="text" name="text2"> <input type="button" name="button2" value="Controllo immissione" onClick="test2(this.form)"> </CENTER>