print header( -charset=>'utf-8' );
print start_html( -script => my $js,
                -style=>'/data/css/style.css',
                  -title=>'Order Project!' );

[download]

Wrong. You are setting up another lexical variable $js which is empty at this point.

You want 

my $js = <<EOH;
// JavaScript here
EOH
print header( -charset=>'utf-8' );
print start_html( -script => $js,
                -style=>'/data/css/style.css',
                  -title=>'Order Project!' );

[download]

update: Try 

td(
  popup_menu(
    -name => 'ordered_items',
    -multiple => 1,
    -id => 'ordered_items',
    -style => "width: 230px;"
  )
),

[download]

--shmem 

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}

In reply to Re^3: How to select many times from a drop down menu in the same form by shmem
in thread How to select many times from a drop down menu in the same form by Nik

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