<head>
<script language="JavaScript">
<!-- Hide
function test1(form) {
if (form.text1.value == "")
alert("Please enter a string!")
else {
alert("Hi "+form.text1.value+"! Form input ok!");
}
}
function test2(form) {
if (form.text2.value == "" ||
form.text2.value.indexOf('@', 0) == -1)
alert("No valid e-mail address!");
else alert("OK!");
}
// -->
</script>
</head>
<body>
<form name="first">
Enter your name:<br>
<input type="text" name="text1">
<input type="button" name="button1" value="Test Input" onClick="test1(this.form)">
<P>
Enter your e-mail address:<br>
<input type="text" name="text2">
<input type="button" name="button2" value="Test Input" onClick="test2(this.form)">
</body>
function setfocus() {
document.first.text2.focus();
return;
}
<body onLoad="setfocus()">
Riepilogo: Parte 1 - Parte 2 - Parte 3 - Parte 4 - Parte 5 - Parte 6 -