Validar ComboBox
Ejemplo:
<script>
function valita(){
var frm=document.forms['frmEsercitazione'];
if(frm.cboRubrica.value=="1"){
alert('Campo Obbligatorio: Rubrica');
}else if(frm.cboProvincia.value=="1"){
alert('Campo Obbligatorio: Provincia');
}else{
frm.submit();
}
}
</script>
Validar Textarea:
Ejemplo:
<script>
function valita(){
var frm=document.forms['frmEsercitazione'];
if(frm.idTextarea.value==""){
alert('Campo Obbligatorio: Testo Annuncio');
}else{
frm.submit();
}
}
</script>
Validar TextBox:
Ejemplo 1:
<html>
<script>
function valita(){
var frm=document.forms['frmTelefono'];
if(frm.txtTelefono.value==""){
alert('Campo Obbligatorio');
}else{
frm.submit();
}
}
</script>
<body>
<form action="processa.html" name="frmTelefono">
<input type="textbox" name="txtTelefono">
<input type="button" value="Invia" onClick="valita();">
</form>
</body>
</html>
Ejemplo 2:
<html>
<script>
function valita(){
var frm=document.forms['frmDati'];
if(frm.txtLogin.value==""){
alert('Campo Obbligatorio login');
}else if(frm.txtPassword.value==""){
alert('Campo Obbligatorio password');
}else{
frm.submit();
}
}
</script>
<body>
<form name=frmDati action=processa.html method=post>
<table width=200 >
<tr>
<td align=left >
User
</td>
<td align=center>
<input type=textbox size=10 maxlength=10 name=txtLogin>
</td>
<tr>
<td align=left >
Password
</td>
<td align=center>
<input type=password size=10 maxlength=10 name=txtPassword>
</td>
</tr>
<tr>
<table width=200 >
<tr>
<td align=center>
<input type="button" value="Invia" onClick="valita();" >
</td>
<td align=center>
<input type=reset value=Cancella>
</td>
</tr>
</table>
</tr>
</table>
</form>
</body>
</html>
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