Excel export With Kendo Grid in angularjs

app.js

$scope.loadGridData = function(url) {
        $scope.mainGridOptions = {
            dataSource: {
                transport: {
                    read: {
                        url: url,
                        dataType: "json"
                    }
                },
                pageSize: __grid_pagesize,
            },
            serverPaging: false,
            serverSorting: false,
            serverFiltering: false,
            sortable: true,
            selectable: true,
            pageable: {
                refresh: true,
                pageSizes: __grid_pagesize_arr,
                buttonCount: 3,
                messages: {
                    itemsPerPage: $scope.multi_lang.grid.per_page,
                    display: " {0} - {1} " + $scope.multi_lang.grid.out_of + " {2} " + $scope.multi_lang.grid.records,
                    empty: $scope.multi_lang.grid.empty_msg,
                    allPages: $scope.multi_lang.grid.all_pages
                }
            },
            excelExport: function(e) {

                var sheet = e.workbook.sheets[0];
                for (var rowIndex = 0; rowIndex < sheet.rows.length; rowIndex++) {
                  var row = sheet.rows[rowIndex];
                  for (var cellIndex = 0; cellIndex < row.cells.length; cellIndex ++) {              
                    var cell =row.cells[cellIndex];
                    if(cell.value && cell.value.toString().indexOf("<br>") >= 0){
                    var regex = /<br>/gi;
                      cell.value = cell.value.replace(regex, "\n"); 
                      cell.wrap = true;
                    }
                  }
                }
                e.workbook.fileName = "Prozessüberwachung.xlsx";
            },
            filterable: { mode: "row" },
            dataBound: function(e) {
                var grid = this;
                grid.tbody.find("tr").dblclick(function(e) {
                    var dataItem = grid.dataItem(this);
                    $scope.open_details(dataItem);
                });
            },
            columns: $scope.columns_def
        };
    }


    $scope.exportToExcel = function(){
        var grid = $("#kendo-grid").data("kendoGrid");
        grid.saveAsExcel();
    }