in reply to Simple example of CGI (Perl) + HTML + CSS + Javascript/jQuery + Ajax

I like your example but I think some people may get a little confused by the amount it does. I have taken your idea and created a very basic example. It does not do anything as interesting but it does show how a simple jquery ajax call can be used with perl.

The example consists of two files the cgi and the template. The template contains a jquery function to post a number to the cgi. The cgi will return a json formatted result which jquery will place in a div.


#!/usr/bin/perl use strict; use warnings; use CGI; use JSON; use Template; my $q = new CGI; my %data; if ( my $number = $q->param('number') ) { if ( $number =~ /^\d+$/ ) { $data{result} = $number % 2 ? 'odd' : 'even'; } else { $data{result} = 'Not a number'; } print $q->header('application/json'); print to_json(\%data); exit; } $data{title} = 'Simple jquery example'; print $q->header( -charset=>'utf-8' ); my $tt = Template->new; $tt->process('simple.tmpl', \%data);


<!DOCTYPE html> <html> <head> <title>[% title %]</title> <meta charset='utf-8' /> <script type='text/javascript' src='// +/libs/jquery/1.10.2/jquery.min.js'></script> </head> <body> <div id='result'></div> Enter number: <input type='text' id='number' /> <button onclick='test_number();'>Test</button> <script> function test_number() { $.ajax({ type: 'POST', url: 'simple.cgi', data: { 'number': $('#number').val() }, }).done(function( msg ) { $('#result').html( + msg.result ); }); } </script> </body> </html>