Passing JavaScript Variable to PHP Session variable

Question

I am trying to update/create session variable when I change the option thru a drop-down box. TThe value is stored in a javascript function. Can any1 tell me how I can pass this

Answer 1

PHP session variable resides on the server:

http://www.w3schools.com/PHP/php_sessions.asp

but the JavaScript values are on client-end only.

There should be a mechanism to send this to server, if not using ajax: try saving this value into a hidden field and then sending it using usual get/post.