3.3. But it was probably too fast for you to notice...

Break Neck Pizza isn't called "break neck" for nothingthe request to get your address and the response from the server happens so fast that you probably don't have time to start typing in your ordermuch less improve your golf gamebefore your address pops up.

As soon as you type in your phone number, the browser sends a request for your address to the server.

JavaScript       Customer's
                     Phone Number   PHP script

JavaScript       Customer's     PHP Script
No time for typing or golf here!
The server responds with your
address almost immediately.
                       Address

You probably see your address pop up right away, before you have a chance to do anything else.