function exportToExcel() {
        var tab_text = "";
        var textRange; var j = 0, rows = '';
        tab = document.getElementById('student-detail');
        tab_text = tab_text + tab.rows[0].innerHTML + "";
        var tableData = $('#student-detail').DataTable().rows().data();
        for (var i = 0; i < tableData.length; i++) {
            rows += ''
                + '' + tableData[i].value1 + ''
                + '' + tableData[i].value2 + ''
                + '' + tableData[i].value3 + ''
                + '' + tableData[i].value4 + ''
                + '' + tableData[i].value5 + ''
                + '' + tableData[i].value6 + ''
                + '' + tableData[i].value7 + ''
                + '' +  tableData[i].value8 + ''
                + '' + tableData[i].value9 + ''
                + '' + tableData[i].value10 + ''
                + '';
        }
        tab_text += rows;
        var data_type = 'data:application/vnd.ms-excel;base64,',
            template = '{table}',
            base64 = function (s) {
                return window.btoa(unescape(encodeURIComponent(s)))
            },
            format = function (s, c) {
                return s.replace(/{(\w+)}/g, function (m, p) {
                    return c[p];
                })
            }

        var ctx = {
            worksheet: "Sheet 1" || 'Worksheet',
            table: tab_text
        }
        document.getElementById("dlink").href = data_type + base64(format(template, ctx));
        document.getElementById("dlink").download = "StudentDetails.xls";
        document.getElementById("dlink").traget = "_blank";
        document.getElementById("dlink").click();
    }