function Export() {

            html2canvas(document.getElementById('order-listing'), {

                onrendered: function (canvas) {

                    var data = canvas.toDataURL();

                    var docDefinition = {

                        content: [{

                            image: data,

                            width: 1000

                        }]

                    };

                    pdfMake.createPdf(docDefinition).download("detailedattendance.pdf");

                }

            });

        }