thanks for the logic. it has worked for me. i really appreciate for your effort

now the problem i have. resluts come in popup window. and want to print resluts on page with no popup. i tried to change it from

#!/usr/bin/perl
# test1.pl
use strict;
use JSON; 
use CGI;
my $q = new CGI;
my $json = encode_json(
  { msg => "Time now is ".localtime }
);
print $q->header( -type => 'application/json' ),$json;

[download]
to 
#!/usr/bin/perl


use JSON; 
use CGI;
my $q = new CGI;
my $json = encode_json(
  { msg => "Time now is ".localtime }
);

print "Content-type: text/html\n\n";
print $json;

[download]

so am getting undefined as error

because if use print $q->header( -type => 'application/json' ),$json; that means its going to bring a popup window. cgi header generates popup window

In reply to Re^2: submit data without reload by bigup401
in thread submit data without reload by bigup401

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.