Check out CGI Docs 

#!perl
use CGI qw(:standard);
use strict ;
use warnings;
my $query = new CGI;


print $query->header;
print start_html(-title=>"hello world", -bgcolor=>"#BOE0E6" );


my $js =<<JS;

<SCRIPT Language="javascript">
function check_answer()
  {    
        if(document.hello.empcode.value==false)
        {
         alert("Please enter the Software");
         document.hello.empcode.focus();    
          return false;
        } 
        return true;
    }    

</SCRIPT>
JS

print "$js \n\n";
print $query->startform(-method=>"POST",-action=>"mycgi.cgi",-onSubmit
+=>'return check_answer()',-name=>'hello');

print $query->textfield(-name=>'empcode',
                        -size=>20,
                        -maxlength=>20);
                        
print $query->submit(-name=>'submit',
                -value=>'submit');
print $query->reset    ;            
                        
print $query->endform;

[download]

In reply to Re: How to validate the form in CGI by mkirank
in thread How to validate the form in CGI by gube

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