Pass JavaScript Cookie to Classic ASP

Keeping up with yesterdays post I figured I would illustrate how to create a JavaScript cookie and pass it to Classic ASP.

This part was taken from http://www.w3schools.com for those of you that need a course on JavaScript Cookies:

<script type=”text/javascript”>
function getCookie(c_name)
{
if (document.cookie.length>0)
{
c_start=document.cookie.indexOf(c_name + “=”);
if (c_start!=-1)
{
c_start=c_start + c_name.length+1 ;
c_end=document.cookie.indexOf(”;”,c_start);
if (c_end==-1) c_end=document.cookie.length
return unescape(document.cookie.substring(c_start,c_end));
}
}
return “”
}

function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ “=” +escape(value)+((expiredays==null) ? “” : “; expires=”+exdate.toGMTString());
}

function checkCookie()
{
username=getCookie(’username’);
if (username!=null && username!=”")
{
alert(’Welcome again ‘+username+’!');
}
else
{
username=prompt(’Please enter your name:’,”");
if (username!=null && username!=”")
{
setCookie(’username’,username,365);
}
}
}
</script>

The real important part to take away from this is:

function setCookie(c_name,value,expiredays)
{
var exdate=new Date();
exdate.setDate(exdate.getDate()+expiredays);
document.cookie=c_name+ “=” +escape(value)+((expiredays==null) ? “” : “; expires=”+exdate.toGMTString());
}

Now we can edit this to what we need like so:

var exdate=new Date();
var CookieValue = ‘Hello World’

exdate.setDate(exdate.getDate()+1);
document.cookie=”CookieName”+ “=” +escape(CookieValue)+((’==null) ? “” : “; expires=”+exdate.toGMTString());

To call this Cookie all you need to do is:

<%
Response.Write Request.Cookies(”CookieName”)
%>

That’s all there is to it.