AI Workshop: learn to build apps with AI →
Cookies: Updating a cookie

Join the AI Workshop and learn to build real-world apps with AI. A hands-on, practical program to level up your skills.


To update the value of a cookie, assign a new value to the same cookie name:

document.cookie = 'name=Flavio2'

To update the expiration date, assign a new value that includes a new expires or max-age value:

document.cookie = 'name=Flavio; max-age=31536000' // expires in 1 year

Include any other parameters you used when first setting the cookie, such as path or domain.

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
11: Cookie not being set in Safari