Welcome back. Now that your brain has re-acclimated to the semicolons and curly braces of the JavaScript world, it’s time to learn something useful and exciting.

We’ll spend this lesson sampling those tasty treats known as cookies – the little bits of information you can leave on the computers of people who visit your site. Cookies allow you to give your pages a personal touch. For instance, with a cookie you can “remember” people’s names and serve up a warm greeting every time they re-visit. You can also remember user preferences – if a visitor generally comes in on a slow connection, a cookie lets you know to automatically serve them minimal graphics.