<th class="col-md-3"><a href="" ng-click="desc('2',la=!la)">單價</a></th> <th class="col-md-3"><a href="" ng-click="desc('3',la=!la)">銷售金額</a></th> <th class="col-md-1"><a href="" ng-click="desc('4',la=!la)">銷售數量</a></th>

//開始默認為totalnum字段 按照降序排列$scope.foodsale =ret.sort(function ( x,y )    {     return y.totalnum - x.totalnum;//這樣表示 按照ret【表示接收返回數組】里面的totalnum字段 按照降序排列 反之 return x.totalnum - y.totalnum; 為升序})　　 $scope.desc= function (fla,bol) {   if(fla=="4"){    if(bol==false){          $scope.foodsale =$scope.foodsale.sort(function ( x,y )     {      return y.totalnum - x.totalnum;     })    }else{     console.log("bbb")     $scope.foodsale =$scope.foodsale.sort(function ( x,y )     {      return x.totalnum - y.totalnum;     })    }   }else if(fla=="3"){//totalmoney    if(bol==false){     $scope.foodsale =$scope.foodsale.sort(function ( x,y )     {      return y.totalmoney - x.totalmoney;     })    }else{     $scope.foodsale =$scope.foodsale.sort(function ( x,y )      {       return x.totalmoney - y.totalmoney;      }     )    }   }else if(fla=="2"){//price    if(bol==false){     $scope.foodsale =$scope.foodsale.sort(function ( x,y )     {      return y.price - x.price;     })    }else{     $scope.foodsale =$scope.foodsale.sort(function ( x,y )      {       return x.price - y.price;      }     )    }   }