Hi

I am running the below code.

use CGI;
my $co = new CGI;
use CGI qw(:standard);
use CGI::Carp qw(fatalsToBrowser);
use strict;
use diagnostics;
print $co->header;
print $co->start_html();
print $co->start_form;
print $co->h4("Name").$co->p;
print $co->textfield('name').$co->p;
print <<CheckNameBox;
<script language="JavaScript">
function CheckForEmptyTextbox() {
    alert(document.getElementById("name").value);    
} // end function
</script>
CheckNameBox
print $co->submit(-onclick=>"CheckForEmptyTextbox()");
print $co->reset;
print $co->end_form;
print $co->end_html;
[download]

In the above code, alert box doesn't appear on clicking submit button with or without any value in "name" text box.

use CGI;
my $co = new CGI;
use CGI qw(:standard);
use CGI::Carp qw(fatalsToBrowser);
use strict;
use diagnostics;
print $co->header;
print $co->start_html();
print $co->start_form;
print $co->h4("Name").$co->p;
print $co->textfield('name').$co->p;
print <<CheckNameBox;
<script language="JavaScript">
function CheckForEmptyTextbox() {
    alert("hello");    
} // end function
</script>
CheckNameBox
print $co->submit(-onclick=>"CheckForEmptyTextbox()");
print $co->reset;
print $co->end_form;
print $co->end_html;
[download]

But in the 2nd code, alert box appears. May be in the 1st code, document.getElementById("name").value is not able to pick the value from textbox. Why alert box not appearing in the first code or what steps shall i take to make alert box working in the first code with the value in name textbox.