JAVASCRIPT - Última Modificación con variante

Última Modificación con variante

Compatibilidad: Ms Internet Explorer, Netscape
La variante respecto al ejemplo ya examinado en estas páginas es que el script informa también de si la página de la última visita ha sido modificada.

[ Muestra el ejemplo práctico ]

el código para insertar en tu página

<TITLE>Ejemplos Javascript: ejemplo práctico </TITLE>

</HEAD>

/*******************************************************

**       S.Christopher Brown's (Spikeman)'s            **

**       java script Cookie (lastModified )            **

**   http://www.geocities.com/BourbonStreet/3843       **

**  You can freely use  this script, if this credit is **

** given in the source. So that mean don't mess around **

** with my ( Spikeman ) Script or Script's k ?         **

**                  Thank you                          **

*******************************************************/

// This JavaScript code Modifications by S.Chris Brown  (Spikeman) 1996 - 1997 ( http://www.geocities.com/BourbonStreet/3843 )

<!-- hide from non-JavaScript browsers

function getCookieVal (offset) {

var endstr = document.cookie.indexOf ("Spikeman_Cookie", 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("Spikeman_Cookie", 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();

FixCookieDate (exp); // Correct for Mac bug

exp.setTime (exp.getTime() - 1);  // This cookie is history

var cval = GetCookie (name);

if (cval != null)

document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();

}

var cookie_date=new Date(document.lastModified);

var expdate = new Date();

expdate.setTime(expdate.getTime()+(1*5*18*33*1000));

document.write("This page last updated on:<P> "+document.lastModified);

document.write("<br>");

if (!(cookie_date == GetCookie("cookie_date"))){

SetCookie("cookie_date",cookie_date,expdate);

document.write("<font color='Red'>This page has changed since your last visit!</font><br>");

}

// end hide -->

</script>

</body>
</html>