Please forgive me if I read your code wrong, Javascript isn't my first language. Couldn't you remove the Javascript and do this.

#!/usr/local/bin/perl -wT
use CGI qw(:standard);
use strict;

my $num = param('number');  #has to be numeric
my $let = param('lets'); #has to be letters
my $both = param('both'); #can be letter or number
die "Invalid datatype for num" if $num =~ /[^0-9]/;
die "Invalid datatype for let" if $let =~ /[^a-zA-Z]/;
die "Invalid datatype for both" if $both =~ /[^0-9a-zA-Z]/;
die "num can not be null" unless defined $num;
die "let can not be null" unless defined $let;
die "both can not be null" unless defined $both;

[download]

Many other security measures could be taken as well, I suggest you check out Ovid's Course in the Tutorials section for better examples.

"Pain is weakness leaving the body, I find myself in pain everyday" -me

In reply to Re: A problem use CGI.pm by kutsu
in thread A problem use CGI.pm by lgjut

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.