here is my perl script, am trying to make my page not to reload the whole page like the whole content on page, but only some part, some div in html. like when i delete user spinner displays after user deletion div reload and spinner also disappear after operation
and i have used json. but i need help, some corrections. i know this is not json help sites or community. but anyone have idea can help me. i have got a free mysql hosting account for testing in the script, to be easier for the person to understand and easy correcting and help. thanks
main.pl
#!/usr/bin/perl -w
use CGI;
use DBI;
use Template;
my $cgi = CGI->new();
my $html = Template->new;
my $host = "sql2.freemysqlhosting.net";
my $usr = "sql2343290";
my $pwd = "qV5*gE2%";
my $dbname = "sql2343290";
my $dbh = DBI->connect("DBI:mysql:$dbname:$host", $usr, $pwd, {
AutoCommit => 0,
RaiseError => 1,
}) or die $DBI::errstr;
my $select_names = $dbh->prepare("select id, name from names");
$select_names->execute();
my $names = $select_names->fetchall_arrayref();
$dbh->disconnect;
print "Content-type: text/html\n\n";
my $temp_html = <<START_HTML;
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Untitled Document</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery
+.min.js"></script>
<style>
#cover-spin {
position:fixed;
width:100%;
left:0;right:0;top:0;bottom:0;
background-color: rgba(255,255,255,0.7);
z-index:9999;
display:none;
}
@-webkit-keyframes spin {
from {-webkit-transform:rotate(0deg);}
to {-webkit-transform:rotate(360deg);}
}
@keyframes spin {
from {transform:rotate(0deg);}
to {transform:rotate(360deg);}
}
#cover-spin::after {
content:'';
display:block;
position:absolute;
left:48%;top:40%;
width:40px;height:40px;
border-style:solid;
border-color:black;
border-top-color:transparent;
border-width: 4px;
border-radius:50%;
-webkit-animation: spin .8s linear infinite;
animation: spin .8s linear infinite;
}
</style>
<script>
\$(document).ready(function () {
\$("#Submit").click(function(event) {
Execute();
\$('#cover-spin').show();
});
function Execute(){
\$.ajax({
type: 'POST',
url: 'delete.pl',
data: { 'dbid': \$("input[name='dbid']").val()
},
success: function(res) {
\$('#cover-spin').hide();
\$('#result').text(res.msg);
},
error: function() {
alert("failed");
}
});
};
});
</script>
</head>
<body>
<p>content </p>
<p>====================================================== <br />
|<br />
|content<br />
|<br />
-------------------------------------------------------<br />
<br />
after submit relond only content in this div (box) <br />
</p>
<div> <! relond only this part of div >
<div id="cover-spin"></div>
<p> </p>
[% FOREACH name IN list %]
<p>Name:
[% name.1 %]
</p>
<input type="hidden" name="dbid" value="[% name.0%]">
<button type="submit" id="Submit" name="delete" value="delete">Del
+ete user</button>
<p id="result"></p>
[% END %]
</div> <! div ends here >
<p><br />
---------------------------------------------------------<br />
|<br />
| content <br />
|<br />
====================================================== </p>
<p>content</p>
</body>
</html>
START_HTML
$html->process (\$temp_html, { list => $names})
or die $html->error;
delete.pl
#!/usr/bin/perl -w
use CGI;
use DBI;
use JSON;
use CGI qw(:standard);
my $cgi = CGI->new();
my $host = "sql2.freemysqlhosting.net";
my $usr = "sql12345678";
my $pwd = "**********";
my $dbname = "sql12345678";
my $dbh = DBI->connect("DBI:mysql:$dbname:$host", $usr, $pwd, {
AutoCommit => 0,
RaiseError => 1,
}) or die $DBI::errstr;
$db_id = $cgi->param("dbid");
if (param('delete') eq 'delete') {
my $delete = $dbh->prepare("delete from names where id =?");
$delete->execute($db_id);
$delete->finish();
$success = "user deleted";
my $json = encode_json(
{ msg => $success }
);
print $cgi->header( -type => 'application/json' ),$json;
}
$dbh->commit;
$dbh->disconnect;
