setting cross-subdomain cookie with javascript

javascript setcookie
newnomad picture newnomad · Jan 17, 2011 · Viewed 57.6k times · Source

How should I add domain support to these functions? I want to achieve that .example.com is declared as domain, so that the cookies can be read across all subdomains of the example.com. In its current form since domain is not set, it can only be read from www.example.com

Answer

Tom Gullen picture Tom Gullen · Jan 17, 2011

Here is a link on how to share cookies amongst a domain:

https://www.thoughtco.com/javascript-by-example-2037272

It involves setting the domain attribute of the cookie string like:

document.cookie = "myValue=5;path=/;domain=example.com";

This cookie should now be accessible to all sub domains of example.com like login.example.com

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