September 2002
Intermediate to advanced
544 pages
13h 6m
English
Content preview from Sams Teach Yourself CGI in 24 Hours, Second Edition
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Hidden Fields in Forms
As you learned back in Hour 5, “Creating HTML Forms,” you can use hidden form fields in your forms. Each of these fields contains a name and value that is passed to the CGI script along with the other visible form fields. You can use these hidden form fields to save the state of a transaction from one form to the next, as you saw in the previous lesson.
Let’s say you’re building a Web page that allows a user to register, and you want to ask the user additional questions based on the information he provides in the registration form. If the user responds that he has a TV in his home, you may want to ask how much TV he watches in a week. If he has a dog, you could ask what his favorite brand of dog food is.
In order to store ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.