angularjs实现上拉加载和下拉刷新数据功能

"rowsOfPage": 3,
    "currentPage": 1,
    "totalPages": 10,
    "totalRows": 40,
    "rowsOfPage":10,
    "minRowNumber": 1,
    "maxRowNumber": 3,

$scope.hasMore = false;
    //   $scope.dataNull=false;   // 无数据提示
    $scope.SName = "您当前没有待办事务";
    $scope.do_refresher = function() {
      $scope.currentPage = 1;
      $scope.bItems = [];
      ajax.post(reqUrl, {
        "rowsOfPage": rowsOfPage,
        "currentPage": $scope.currentPage
      }, function(listdata, successful) {
        if (successful) {
          $scope.bItems = listdata.datas || [];
          $scope.hasMore = ($scope.bItems.length < listdata.totalRows);
          if ($scope.bItems.length == 0) {
            $scope.dataNull = true;
          } else {
            $scope.dataNull = false;
          }
        } else {
          $scope.hasMore = false;
        }
        $scope.$broadcast("scroll.refreshComplete");
      });

/*
     * 上拉加载，分批加载服务端剩余的数据
     */
    $scope.do_infinite = function() {
      if (!$scope.hasMore) {
        $scope.$broadcast("scroll.infiniteScrollComplete");
        return;
      }
      // 如果当前页数大于等于总页数，说明已经没数据可再加载了。
      $scope.currentPage += 1;

      ajax.post(reqUrl, {
        "rowsOfPage": rowsOfPage,
        "currentPage": $scope.currentPage
      }, function(listdata, successful) {
        if (successful) {
          //window.debug && alert("length " + listdata.datas.length + " yeshu " + $scope.currentPage);
          $scope.currentPage = listdata.currentPage;
          for (var i = 0; i < listdata.datas.length; i++) {
            $scope.bItems.push(listdata.datas[i]);
          }
          $scope.hasMore = ($scope.bItems.length < listdata.totalRows);
        } else {
          $scope.hasMore = false;
        }
        $scope.$broadcast("scroll.infiniteScrollComplete");
      });