Mercurial > rlmcintyre

diff BoosterPack/scripts/.svn/text-base/pjx_podex.pl.svn-base @ 0:0d795f02a8bb tip
initial committ. what was I thinking?
author: Robert McIntyre <rlm@mit.edu>
date: Mon, 27 Sep 2010 16:57:26 -0400
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/BoosterPack/scripts/.svn/text-base/pjx_podex.pl.svn-base	Mon Sep 27 16:57:26 2010 -0400
     1.3 @@ -0,0 +1,67 @@
     1.4 +#!C:/strawberry/perl/bin/perl.exe
     1.5 +use strict;
     1.6 +use CGI::Ajax;
     1.7 +use CGI;
     1.8 +
     1.9 +# define an anonymous perl subroutine that you want available to
    1.10 +# javascript on the generated web page.
    1.11 +
    1.12 +my $evenodd_func = sub {
    1.13 +  my $input = shift;
    1.14 +
    1.15 +  my $magic = "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<font size=-1>look ma, no submit!</font><br>";
    1.16 +  
    1.17 +  # see if input is defined
    1.18 +  if ( not defined $input ) {
    1.19 +    return("input not defined or NaN" . $magic);
    1.20 +  }
    1.21 +
    1.22 +  # see if value is a number (*thanks Randall!*)
    1.23 +  if ( $input !~ /\A\d+\z/ ) {
    1.24 +    return("input is NaN" . $magic);
    1.25 +  }
    1.26 +
    1.27 +  # got a number, so mod by 2
    1.28 +  $input % 2 == 0 ? return("$input is EVEN" . $magic) : return("$input is ODD" . $magic);
    1.29 +
    1.30 +}; # don't forget the trailing ';', since this is an anon subroutine
    1.31 +
    1.32 +# define a function to generate the web page - this can be done
    1.33 +# million different ways, and can also be defined as an anonymous sub.
    1.34 +# The only requirement is that the sub send back the html of the page.
    1.35 +sub Show_HTML {
    1.36 +  my $html = "";
    1.37 +  $html .= <<EOT;
    1.38 +
    1.39 +<HTML>
    1.40 +<HEAD><title>CGI::Ajax Example</title>
    1.41 +</HEAD>
    1.42 +<BODY>
    1.43 +<form>
    1.44 +  Enter a number:&nbsp;
    1.45 +  <input type="text" name="val1" id="val1" size="6"
    1.46 +     onkeyup="evenodd( ['val1'], ['resultdiv'] ); return true;"><br>
    1.47 +    <hr>
    1.48 +    <div id="resultdiv" style="border: 1px solid black;
    1.49 +          width: 440px; height: 80px; overflow: auto">
    1.50 +    </div>
    1.51 +</form>
    1.52 +</BODY>
    1.53 +</HTML>
    1.54 +EOT
    1.55 +
    1.56 +  return $html;
    1.57 +}
    1.58 +
    1.59 +my $cgi = new CGI();  # create a new CGI object
    1.60 +# now we create a CGI::Ajax object, and associate our anon code
    1.61 +my $pjx = new CGI::Ajax( 'evenodd' => $evenodd_func );
    1.62 +
    1.63 +# now print the page.  This can be done easily using
    1.64 +# CGI::Ajax->build_html, sending in the CGI object to generate the html
    1.65 +# header.  This could also be done manually, and then you don't need
    1.66 +# the build_html() method
    1.67 +print $pjx->build_html($cgi,\&Show_HTML); # this outputs the html for the page
    1.68 +
    1.69 +# that's it!
    1.70 +
author	Robert McIntyre <rlm@mit.edu>
date	Mon, 27 Sep 2010 16:57:26 -0400
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