Client only cookies - cookie which doesn't ever go to the server

Question

I want to store user-clicked data in a cookie which never has to go to the server. Its like a session-added data, which I want to persist over sessions, as in the data just keeps adding to the cookie, and it is stored for a long time, and only gets deleted when the user removes browsing history. The cookie is pure-client only cookie and it never has to go the server, as I don't need the user generated data at the server, so I want to get rid of the additional overhead the cookie creates in sending back and forth between browser and server. Is it possible to achieve this?

Answer 1

I know it´s a little late for you, but this answer is for all who have the same problem.

1) With HTML5 you can use [web storage][1].

2) (Just an idea! - not tested!) You could define a cookie (via javascript on client) and set the "secure"-attribute. In this case, the cookie will only be sent to the server on HTTPS connections. To make sure the cookie never leaves the browser, you just never open a HTTPS connection ;-)