Javascript traitement fichier txt

<!DOCTYPE html>
<html>
    <head>
        <script type="text/javascript">
                function loadFile(o)
                {
                    var fr = new FileReader();
                    fr.onload = function(e)
                        {
                            showDataFile(e, o);
                        };
                    fr.readAsText(o.files[0]);
                }

                function showDataFile(e, o)
                {
                    document.getElementById("data").innerText = e.target.result;
                }
            </script>

        </script>
    </head>
    <body>
        Select file to read <input type="file" onchange="loadFile(this)">
        <pre id="data"></pre>
    </body>
</html>