Cookies: Deleting a cookie

To delete a cookie, unset its value and pass a date in the past:

document.cookie = 'name=; expires=Thu, 01 Jan 1970 00:00:00 UTC;'

(and again, with all the parameters you used to set it)

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