Chapter 12. SAVING VISITOR INFORMATION WITH COOKIES
It's often helpful to remember a little bit of information about a visitor after he or she has left your site: a login name, the last time the visitor visited, or any customization preferences a visitor has set while visiting your site. To remember this information, you'll have to save it somewhere.
Chapter 10 showed you how to use frames to a store a visitor's answers to quiz questions. Unfortunately, after the browser is closed, this method does not retain the information the visitor entered. Cookies provide a solution to this problem: They let you save information on your visitor's computer for a specified length of time.
Cookies aren't hard to use, but the code for saving and retrieving them ...
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