Cookies: Setting a cookie domain

The domain can be used to specify a subdomain for your cookie.

document.cookie = 'name=Flavio; domain=mysite.com;'

If not set, it defaults to the host portion even if using a subdomain (if on subdomain.mydomain.com, by default it’s set to mydomain.com). Domain cookies are included in subdomains.

Lessons in this unit:

0: Introduction
1: Setting cookies
2: Setting a cookie expiration date
3: Setting a cookie path
4: ▶︎ Setting a cookie domain
5: Cookies security
6: Updating a cookie
7: Deleting a cookie
8: Accessing the value of a cookie
9: Checking if a cookie exists
10: Inspecting cookies