Behind the scenes, once the user enters in their data and hits a submit button, the web browser will collate the user defined values for the form widgets and submit them to the web server using the POST or GET methods of the HTTP protocol. Again, we will discuss the HTTP communication layer aspects in the next section. What you should do at this point is get comfortable with the idea that HTML provides the syntax for defining forms and that browsers will help you process those forms. Besides dealing with HTML form widgets, web browsers also help you maintain application state . Consider the example of a web store that might need to keep track of all the items a client has added to a virtual shopping cart.
Applications can access the contents of the cookie so that they can maintain the state.
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