cgi

Here's the source code for a Perl CGI textfield example (a Perl form example). The Perl code below shows how you can display an HTML form with a textfield using the Perl CGI.pm module.

The first time this script is called it displays a textfield in a form. After you submit the form, this script displays the text that you entered in the textfield.

Here's the source code for this CGI.pm "Perl form" textfield example script:

Here's the source code for a Perl CGI popup menu example. (It's called a "popup menu" in the CGI.pm module, but it renders an HTML SELECT/OPTION form in a browser.)

The Perl code below shows how you can display an HTML form with a popup menu, using the Perl CGI.pm module. The first time this script is called it displays the popup menu (combo box) in a form. After you submit the form, this script displays the item you selected from the combo box.

Here's the source code for this Perl CGI.pm combo box example script:

Here's the source code for a Perl CGI scrolling list example. The CGI.pm module calls this a scrolling list, but it renders an HTML SELECT/OPTION form field with the "multiple" attribute.

The Perl code below shows how you can display an HTML form with a scrolling list field, using the Perl CGI.pm module. The first time this script is called it displays a scrolling list field in a form. After you submit the form, this script displays the item you selected in the scrolling list.

Here's the source code for this Perl CGI.pm scrolling list example script:

Perl CGI environment variables: How can I print all of the Perl CGI environment variables? I'd like to see what CGI environment variables are available, and what their values are.

Somewhere in my history of working with Perl and CGI programs, I decided I needed a program that would simply print all of the CGI environment variables that my Perl programs were aware of. I can't remember if it was curiosity or what, but I decided that I needed a CGI program that did nothing else but print the environment variables it knew of.

I created a JSP this morning that prints out the equivalent of most traditional CGI parameters. Sometimes I use these to debug a problem, other times I use them within JSP/servlet code for other non-debug purposes.

Here's the Java source code for my JSP CGI page, which I named cgiParams.jsp. As you can see, most of these variables come from the JSP request object: