javascript - Error in Sending Form file with form using AJAX

Question

I am trying to submit form using AJAX that contains CSV File. So the idea is sending the form using ajax, process it in different file by generating a table and call back the processed table back into the page.

What i Have is this,

<form id="uploadXls" action="" method="post" enctype="multipart/form-data">
      <input id="uploaderFile" type="file" class="file"><br/>
      <button type="button" class="btn btn-orange pull-right" name="btnSubmit" id="btnSubmit"><i class="fa fa-download"></i> SHOW FILE CONTENT</button>
</form>

and the JavaScript is,

$("#btnSubmit").click(function(){
            $.ajax({
                type: 'POST',
                url: '../../content/maindiv_content/drawing/divpages/process_xls_file.php',
                data: new FormData(this),
                contentType: false,
                cache: false,
                processData: false,
                success: function (response, textStatus, jqXHR) {
                  $("#showFileContentTable").html(data);
                }
            });
        }); 

and im getting this kind of error in firebug,

TypeError: Argument 1 of FormData.constructor does not implement interface HTMLFormElement.
http://infserver/WeltesTankage/dist/js/jquery-1.10.2.min.js line 4 > eval
Line 14

What am i doing wrong here ? Please help me

Answer 1

Don't pass the files into the constructor, but use append, like:

var formData = new FormData();
formData.append('file', $('input[type=file]')[0].files[0]);
data:  formData