I'm handling cookies using JavaScript to store some values in my asp web application. I use document.cookie to save some values (converted into a lengthy string). But i want that value to be accessible across all the pages in my application.

When i try to get that value from a different page, i get the values pertaining to the document in the current URL.

In short i save the value in the cookie in http://myapp/doc1.aspx and want to retrieve it in http://myapp/doc2.aspx

So is document.cookie is pertaining to a single document scope? How can i save/read cookies across the site?

Update

This is how i get and set cookies

function getCookie(c_name)
{
try{
  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));
    }
  }
  }
  catch(e)
  {}
return "";
}

function setCookie ( name, value, exp_d) 
{
  var cookie_string = name + "=" + escape ( value );

  if ( exp_d )
  {
    var exdate=new Date();
    var expires = new Date ( exdate.getYear(), exdate.getMonth(), exdate.getDay()+exp_d );
    cookie_string += "; expires=" + expires.toGMTString();
  }

  document.cookie = cookie_string;
}

But i'm getting different values for the cookies in different pages. Any ideas?

Thank you.

I'm handling cookies using JavaScript to store some values in my asp web application. I use document.cookie to save some values (converted into a lengthy string). But i want that value to be accessible across all the pages in my application.

When i try to get that value from a different page, i get the values pertaining to the document in the current URL.

In short i save the value in the cookie in http://myapp/doc1.aspx and want to retrieve it in http://myapp/doc2.aspx

So is document.cookie is pertaining to a single document scope? How can i save/read cookies across the site?

Update

This is how i get and set cookies

function getCookie(c_name)
{
try{
  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));
    }
  }
  }
  catch(e)
  {}
return "";
}

function setCookie ( name, value, exp_d) 
{
  var cookie_string = name + "=" + escape ( value );

  if ( exp_d )
  {
    var exdate=new Date();
    var expires = new Date ( exdate.getYear(), exdate.getMonth(), exdate.getDay()+exp_d );
    cookie_string += "; expires=" + expires.toGMTString();
  }

  document.cookie = cookie_string;
}

But i'm getting different values for the cookies in different pages. Any ideas?

Thank you.

• javascript
• asp
• scope
• cookies

Share Improve this question Follow edited Aug 17, 2010 at 12:41 NLV asked Aug 17, 2010 at 12:30 NLVNLV 21.7k4141 gold badges120120 silver badges186186 bronze badges 2

• I'm not seeing anything wrong here. Have you tried creating a short-cut to javascript:alert(document.cookie) to inspect it at different points, and setting breakpoints in firebug or similar to make sure you aren't writing it before you're setting it? – Jon Hanna Commented Aug 17, 2010 at 12:46
• Yes, i'm doing exactly what you have said. – NLV Commented Aug 17, 2010 at 12:53

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3 Answers 3

Sorted by: Reset to default 3

Cookies have a domain and a path. By default the domain will be the domain it is set from and the path will be the root path, but these can be over-ridden as follows:

Resource at http://www.example/foo/bar/baz sets a cookie (whether from the server or client-side javascript).

By default its domain is www.example and its path is / so it will be visible to all resources whose URI matches ://www.example/ where * is a simple wildcard.

Its domain can be set to example, but cannot be set to example - it can only be set to a domain that it is a subdomain of. (There are special, and imperfect, rules to stop you setting a cookie for a tld like )

Its path can be set to /foo/bar/baz or /foo/bar or even /foo/ba as it is pared with simple substring matching. If set to e.g. /foo/bar/ then it will be visible to a resource at http://www.example/foo/bar/qux but not one at http://www.example/foo/quux/corge

There is also the secure proprty, which restrict the cookie to the HTTPS protocol.

---

Edit: See http://www.quirksmode/js/cookies.html for details on how to actually set these properties.

The issue can be resolved with the help of below syntax

use ";path=/;" at the last while saving the cookies as shown below

document.cookie = c_name + "=" + oldInfo + ";path=/";

Cookies apply to the entire domain name. The cookies created with the code you posted will be available to any page hosted on your domain name.