I have thought myself into a box on this one. The background I have a web page that presents multiple forms to fill out. The fields are presented on the page based on Javascript. All of the logic and form checking is handled within Perl. The Javascript is only used for presentation.

I am trying to add a feature where if a Username is filled in the accompanying information will be looked up and automatically populated in other fields (Office location, phone number etc.)

I can't seem to figure out how to implement this within Perl. Javascript supports an onChange function that would allow me to trigger an action when the value changes for Username. But there isn't a method to call a Perl function from Javascript. And I haven't been able to find a Perl function that would trigger when the value in the Username field changes.

Thanks for any help.
Javahead Update Thanks everyone for the input. The web site is "another duty as assigned" so I'm just picking up web techniques. I was able to get the functionality I wanted with the CGI::Ajax module with only minimal changes. The security concerns are minimal. The webserver is internal only and the HR area requires a login and password.

In reply to CGI how to lookup a value when a Field is filled in by javahead

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