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#!/usr/bin/perl
use strict;
use utf8;
use CGI;
use URI::Escape;
use File::Basename;
use File::Copy;
use File::Path;
use Encode;
use FindBin;

my $q = new CGI;
my $files = $q->param('file');

my $out = <<"EOM";
Content-type: text/html

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="ja" lang="ja">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>

<script src="http://code.jquery.com/jquery-1.12.4.js"></script>
<script type="text/javascript">
    function PageLoad(e) {
        alert("hoge");
        var dropFrame = document.getElementById('DropFrame');
        dropFrame.addEventListener('dragover', onDragOver, false);
        dropFrame.addEventListener('drop', onDrop, false);
    }
    function onDragOver(e){
        e.preventDefault();
    }

    function onDrop(e) {
        e.stopPropagation();
        e.preventDefault();

        var files = e.dataTransfer.files;

        uploadFile(files[0]);
    }
    function uploadFile(file){
        var formData = new FormData();
        formData.append('file', file);
        $.ajax({
            async: true,
            type: 'POST',
            contentType: false,
            processData: false,
            url: 'dndtest.cgi',
            data: formData,
            dataType :'html'
        }).done(function(){});
    }
</script>
</head>
<body>
    <div id="DropFrame" style="background-color:#b8deff;border:solid 1px #3470ff; width:360px; height:120px;">ここにファイルをドロップします。<br />$files</div>
<script type="text/javascript">
    $(function(){
        PageLoad();
    });
</script>
</body>
</html>
EOM
print(encode('UTF-8', $out)) or die($!);

function drop(e) {
        e.stopPropagation();
        e.preventDefault();

        var files = e.dataTransfer.files;

        fup(files[0]);
    }
    function fup(file) {
        var formData = new FormData();
        formData.append('file', file);

//javascriptだけなら
//        var up = new XMLHttpRequest();
//        up.open("POST", "f.php", true);
//        up.send(formData);

//jqueryを使っているなら
        $.ajax({
            async: true,
            type: 'POST',
            contentType: false,
            processData: false,
            url: 'f.php',
            data: formData,
            dataType :'html'
        }).done(function(){});
    }

$(function(){
    PageLoad();
});

var formData = new FormData();
formData.append('file', file);