June 2005
Beginner
480 pages
10h 31m
English
Content preview from SAMS Teach Yourself Perl in 24 Hours THIRD EDITION
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Hidden Fields
The easiest way to have Web forms “remember” information is to embed previous information in them by using hidden fields. Hidden fields are part of the HTML forms specification that allow fields and values to be part of an HTML form but not appear in the form when it's rendered visually. In HTML, they're written as follows:
<input type="hidden" name="fullname" value="Pink Floyd"/>
If the preceding HTML were put into a form, a new name ("fullname") and value ("Pink Floyd") would be part of the form. If the form were submitted to a Perl CGI program, the param function would return a key and a value for the hidden field.
The Online Store
For an example of how to use hidden fields, consider an online store that uses a series of Web ...
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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.