Fecha: 24/01/2003
cookies javascript redireccionar con javascript
este sencillo javascript nos permite redireccionar a los visitantes en base a una cookie.
Código Javascript
<HTML>
<!-- Copiar dentro del tag HEAD -->
<HEAD>
<script type="text/javascript">
<!-- Creado por: Ronnie T. Moore -->
<!-- Begin
var expDays = 30;
var exp = new Date();
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));
function getCookieVal (offset) {
var endstr = document.cookie.indexOf (";", offset);
if (endstr == -1)
endstr = document.cookie.length;
return unescape(document.cookie.substring(offset, endstr));
}
function GetCookie (name) {
var arg = name + "=";
var alen = arg.length;
var clen = document.cookie.length;
var i = 0;
while (i < clen) {
var j = i + alen;
if (document.cookie.substring(i, j) == arg)
return getCookieVal (j);
i = document.cookie.indexOf(" ", i) + 1;
if (i == 0) break;
}
return null;
}
function SetCookie (name, value) {
var argv = SetCookie.arguments;
var argc = SetCookie.arguments.length;
var expires = (argc > 2) ? argv[2] : null;
var path = (argc > 3) ? argv[3] : null;
var domain = (argc > 4) ? argv[4] : null;
var secure = (argc > 5) ? argv[5] : false;
document.cookie = name + "=" + escape (value) +
((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
((path == null) ? "" : ("; path=" + path)) +
((domain == null) ? "" : ("; domain=" + domain)) +
((secure == true) ? "; secure" : "");
}
function DeleteCookie (name) {
var exp = new Date();
exp.setTime (exp.getTime() - 1);
var cval = GetCookie (name);
document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}
var favorite = GetCookie('animal');
if (favorite != null) {
switch (favorite) {
case 'cat' : url = 'cat.html'; // change these!
break;
case 'dog' : url = 'dog.html';
break;
case 'gerbil' : url = 'gerbil.html';
break;
case 'gopher' : url = 'gopher.html';
break;
}
// Debe eliminar las dos barra invertidas que estan delante de window.location.ref para que el script redireccione
// window.location.href = url;
alert('Usted ha elegido como mascota favorita a: ' + favorite + ' la pagina a redireccionar es (' + url + '), recuerde que esto es solo una demo!');
}
// End -->
</script>
</HEAD>
<!-- Copiar dentro del tag BODY -->
<BODY>
<center>
<form>
<table><tr><td>
Seleccione su mascota favorita:<br>
<input type=checkbox name="cat" onClick="SetCookie('animal', this.name, exp);">Cat<br>
<input type=checkbox name="dog" onClick="SetCookie('animal', this.name, exp);">Dog<br>
<input type=checkbox name="gerbil" onClick="SetCookie('animal', this.name, exp);">Gerbil<br>
<input type=checkbox name="gopher" onClick="SetCookie('animal', this.name, exp);">Gopher<br>
</td></tr>
</table>
</form>
</center>
</BODY>
</HTML> 
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