Start Upload all in jquery file upload blueimp-open source projects blueimp/jQuery-File-Upload

I use jQuery file upload blueimp and have read

$(function () {
    $('#fileupload').fileupload({
        dataType: 'json',
        done: function (e, data) {
            $.each(data.result, function (index, file) {
                $('').text(file.name).appendTo(document.body);
            });
        },
        add:function (e, data) {
            $("#uploadBtn").off('click').on('click',function () {
                data.submit();
            });
        }
    });
});

but this uploads a single file, I want to upload all files that have been selected.