RE:Validacion con java PARTE 1
*** AQUI CREO UNA FUNCION PARA VALIDAR LOS CAMPOS ******
<?php
global $db, $link;
function showHeader(){
echo "<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN' 'http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd'>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head>
<meta http-equiv='Content-Type' content='text/html; charset=iso-8859-1' />
<title>----Honda---</title>
<link href='seminuevos.css' type='text/css' rel='stylesheet'/>
<script type='text/javascript'>
function MM_findObj(n, d) { //v4.01
var p,i,x; if(!d) d=document; if((p=n.indexOf('?'))>0&&parent.frames.length) {
d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
if(!x && d.getElementById) x=d.getElementById(n); return x;
}
function MM_validateForm() { //v4.0
var i,p,q,nm,test,num,min,max,errors='',args=MM_validateForm.arguments;
for (i=0; i<(args.length-2); i+=3) { test=args[i+2]; val=MM_findObj(args[i]);
if (val) { nm=val.id; if ((val=val.value)!='') {
if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
if (p<1 || p==(val.length-1)){ errors+='- '+nm+' debe contener una direccion de correo valida.'\n;
} else if (test!='R') { num = parseFloat(val);
if (isNaN(val)) errors+='- '+nm+' debe de contener un numero.'\n;
if (test.indexOf('inRange') != -1) { p=test.indexOf(':');
min=test.substring(8,p); max=test.substring(p+1);
if (num<min || max<num) errors+='- '+nm+' must contain a number between '+min+' and '+max+'.'\n;
}} } else if (test.charAt(0) == 'R') errors += '- '+nm+'.'\n; }
} if (errors) alert('Los siguientes campos son obligatorios:'\n+errors);
document.MM_returnValue = (errors == '');
}
}
</script>
</head>
<body>
<p> </p>
<table width='741' border='0' align='center' cellpadding='0' cellspacing='0'>
<tr>
<td><img src='images/baner_tec.jpg' alt='' width='741' height='159' /></td>
</tr>
</table>
<table width='471' border='0' align='center' cellpadding='0' cellspacing='0'>";