jquery ajax submit callback get this closet : <pre><code>$(document).on('click', '#file-submit', function () {

    $.ajax({
        url: url,
        type: 'POST',
        cache: false,
        data: formData,
        processData: false,
        contentType: false
    }).done(function (data, status, jqxhr) {
        //here will be get a error
        var nextId = $(this).parents('.tab-pane').next().attr("id");
        alert(nextId);

    }).fail(function (data, status, jqxhr) {
        console.log("error");
    });
})
</code></pre>

<p>threr is a button in page, when the page submited,
i will get the value in the form element,
but the i cant get,
please give some point ,thanks.</p>
