Sams Teach Yourself HTML 4 in 24 Hours

Sams Teach Yourself HTML 4 in 24 Hours

By Dick Oliver

How HTML Forms Work

Before you learn the HTML tags to make your own forms, you should understand how the information that someone fills out on a form makes its way back to you. You also need to have the person who runs your Web server computer set it up to process your forms.

Every form must include a button for the user to submit the form. When someone clicks that button, all the information he or she has filled in is sent (in a standard format) to an Internet address that you specify in the form itself. You have to put a special forms-processing program at that address in order for that information to get to you.

Almost all ISP companies that offer Web page hosting also provide preprogrammed scripts to their customers for processing forms. The most common thing that such a script would do is forward the information from the form to your email address, although it might also save the information to a file on the Web server or format the form data and make it easier for you to read. (Of course, if you happen to be a programmer, you can write your own scripts in any language supported on the server.)

A form-processing script also usually generates some sort of reply page and sends it back to be displayed for the user.

It's also possible to set things up so that much of the form information can be interpreted and processed automatically. For example, server software exists to authorize a credit card transaction automatically over the Internet, confirm an order to the customer's email address, and enter the order directly into your company's in-house database for shipment. Obviously, setting up that sort of thing can get quite complex, and it's beyond the scope of this book to explain all the things you can do with form data once it has been submitted.

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