Javascript 在谷歌地图上获取所有选定标记

我对选项有问题

获取所有
。这里是流程。

首先，当用户打开应用程序并想要选择位置时，他有
角度谷歌地图
，所有位置都用标记选择。此外，用户还链接了下拉列表选择（首先需要选择国家，我会在地图上显示该国家的所有标记，然后根据所选国家显示下一个下拉列表和所选国家的州，并仅显示该州的标记，城市也是如此。）

所有标记都有信息框，我将按钮
添加到图表
。当点击添加到图表时，我会在表格列表中显示带有标记id的信息

现在，我想让按钮获取全部并显示列表中的所有id。但是，根据所选下拉列表获取所有标记，例如，如果仅选择国家并按“获取全部”，我将获取国家中的所有标记列表，如果选择状态并单击“获取全部”，则为我提供该状态中的所有标记

这是代码“

$scope.markers=[]；
var infoWindow=new google.maps.infoWindow（）；
var createMarker=函数（信息）{
$scope.selectedbenches=info；
var marker=new google.maps.marker({
map:$scope.map，
职位：新google.maps.LatLng（info.lat，info.lng），
优化：错，
标题：信息城，
图标：“assets/img/marker.png”
});
$scope.allSelectedbenches=函数（）{
控制台.log（$scope.selectedbenches）；
};
$scope.myCartItems=[]；
$scope.addToCart=函数（项）
{
$http.get（serviceBase+'control/board/'+项）
.成功（功能（项目）
{
$scope.myCartItems.push（项目）；
});
$scope.input=''；
setItem（'todos'，JSON.stringify（$scope.myCartItems））；
};
$scope.remove=函数（索引）{
$scope.myCartItems.splice（索引1）；
};
google.maps.event.addListener（标记，'click'，（函数（标记，$scope）{
返回函数（）{
var compiled=$compile（marker.content）（$scope）；
$scope.$apply（）；
infoWindow.setContent（已编译[0]）；
infoWindow.open（$scope.map，marker）；
};
})（范围）
);
$scope.markers.push（marker）；
marker.content=“”
+
''
+
''
+
'序列号：'
+
''
+
info.serial\n
+
''
+
''
+ ''
+
'说明：'
+
''
+
信息描述
+
''
+
''
+
''
+
“上次报告：”
+
''
+
info.last_报告
+
''
+
''
+
''
+
'已创建：'
+
''
+
info.created_在
+
'' + ''
+
''
+
''
+
''
+
''
+
''
+
“”+“”+info.city\u name+“”+“”+marker.content；
}
对于（i=0；i0）{
对于（i=0；i0）{
对于（i=0；i $scope.markers = [];
        var infoWindow = new google.maps.InfoWindow();


        var createMarker = function (info) {
            $scope.selectedbenches = info;
            var marker = new google.maps.Marker({
                map: $scope.map,
                position: new google.maps.LatLng(info.lat, info.lng),
                optimized: false,
                title: info.city,
                icon: 'assets/img/marker.png'

            });

            $scope.allSelectedbenches = function () {
                console.log($scope.selectedbenches);
        };
 $scope.myCartItems = [];

            $scope.addToCart = function (item)
            {
                $http.get(serviceBase + 'control/board/' + item)
                        .success(function (item)
                        {
                            $scope.myCartItems.push(item);

                        });
                $scope.input = '';
                localStorage.setItem('todos', JSON.stringify($scope.myCartItems));
            };

            $scope.remove = function (index) {
                $scope.myCartItems.splice(index, 1);
            };
            google.maps.event.addListener(marker, 'click', (function (marker, $scope) {
                return function () {
                    var compiled = $compile(marker.content)($scope);
                    $scope.$apply();
                    infoWindow.setContent(compiled[0]);
                    infoWindow.open($scope.map, marker);
                };
            })(marker, $scope)
                    );
            $scope.markers.push(marker);
            marker.content = '<div class="iw-container" style="color: #000;">'
                    +
                    '<div class="iw-content">'
                    +
                    '<b>'
                    +
                    'Serial number: '
                    +
                    '</b>'
                    +
                    info.serial_n
                    +
                    '</div>'
                    +
                    '<div class="iw-content">'
                    + '<b>'
                    +
                    'Description: '
                    +
                    '</b>'
                    +
                    info.desc
                    +
                    '<b>'
                    +
                    '</div>'
                    +
                    '<div class="iw-content">'
                    +
                    'Last report: '
                    +
                    '</b>'
                    +
                    info.last_report
                    +
                    '<b>'
                    +
                    '</div>'
                    +
                    '<div class="iw-content">'
                    +
                    'Created: '
                    +
                    '</b>'
                    +
                    info.created_at
                    +
                    '</div>' + '<input type="button" value="Add bench" ng-model="input" ng-click="addToCart(' + info.id + ')"/>'
                    +
                    '<div class="iw-content">'
                    +
                    '<img border="0" float="left" src="https://pbs.twimg.com/profile_images/691936998156804096/iveb6l4U.png">'
                    +
                    '<img border="0" float="right" src="http://www.fibrexgroup.com/images/Products/SSB001-main.jpg">'
                    +
                    '</div>'
                    +
                    '</div>'
                    +
                    '<div class="iw-title" style="color: #000;">' + '<h2>' + info.city_name + '</h2>' + '</div>' + marker.content;

        }

        for (i = 0; i < lokacije.length; i++) {
            createMarker(lokacije[i]);
        }

        $scope.openInfoWindow = function (e, selectedMarker) {
            e.preventDefault();
            google.maps.event.trigger(selectedMarker, 'click');
        }




        $scope.clearMarkers = function () {
            for (var i = 0; i < $scope.markers.length; i++) {
                $scope.markers[i].setMap(null);
            }
            $scope.markers.length = 0;
        }


 //Country filter
        $scope.filterMarkersCountry = function () {
            //1.select filtered country
            var filteredCountries;
            var selectedCountry = $scope.country;
            if (selectedCountry == '0') {
                filteredCountries = lokacije;
            } else {
                filteredCountries = lokacije.filter(function (c) {
                    if (c.country_id == selectedCountry.id)
                        return c;
                });
            }
            //2.update markers on map
            $scope.clearMarkers();
            if (filteredCountries.length > 0) {
                for (i = 0; i < filteredCountries.length; i++) {
                    createMarker(filteredCountries[i]);
                }
            }
        };
 //State filter
        $scope.filterMarkersState = function () {
            //1.select filtered cities
            var filteredStates;
            var selectedStates = $scope.state;
            if (selectedStates == '0') {
                filteredStates = lokacije;
            } else {
                filteredStates = lokacije.filter(function (c) {
                    if (c.state_id == selectedStates.id)
                        return c;
                });
            }
            //2.update markers on map
            $scope.clearMarkers();
            if (filteredStates.length > 0) {
                for (i = 0; i < filteredStates.length; i++) {
                    createMarker(filteredStates[i]);
                }
            }
        };
        //City filter
        $scope.filterMarkersCity = function () {
            //1.select filtered cities
            var filteredCities;
            var selectedCities = $scope.city;
            if (selectedCities == '0') {
                filteredCities = lokacije;
            } else {
                filteredCities = lokacije.filter(function (c) {
                    if (c.city_id == selectedCities.id)
                        return c;
                });
            }
            //2.update markers on map
            $scope.clearMarkers();
            if (filteredCities.length > 0) {
                for (i = 0; i < filteredCities.length; i++) {
                    createMarker(filteredCities[i]);
                }
            }
        };

    });

<div class="narudzbe_lokacija">
                    <div class="col-lg-3 col-md-3 col-sm-6 col-xs-12">
                        <h5>Odabir lokacije</h5>
                        <div>
                            <label class="control-label col-lg-12 col-md-12 col-sm-12 col-xs-12">Country: </label>
                            <select id="country" class="form-control" ng-model="country" ng-options="country as country.name for country in countries track by country.id" ng-change="getState(); filterMarkersCountry()">
                                <option value='country_id'>{{country.name}}</option>
                            </select>
                        </div>
                        <div>
                            <label class="control-label col-lg-12 col-md-12 col-sm-12 col-xs-12">States</label>
                            <select id="state" class="form-control" ng-disabled="!country" ng-model="state" ng-options="state as state.name for state in states track by state.id" ng-change="getCity(); filterMarkersState()">
                                <option value='state_id'>{{state.name}}</option>
                            </select>
                        </div>
                        <div>
                            <label class="control-label col-lg-12 col-md-12 col-sm-12 col-xs-12">City</label>
                            <select id="city" class="form-control" ng-disabled="!state" ng-model="city" ng-options="city as city.name for city in cities track by city.id" ng-change="filterMarkersCity()">
                                <option value='city_id'>{{city.name}}</option></select>        
                        </div>
                        <button ng-click="allSelectedbenches()">Get all</button>

                        <br />
                        <br />
                    </div> 

$scope.myCartItems = [];
            $scope.allSelectedbenches = function () {

                if($scope.filteredCities !== undefined){
                    $scope.myCartItems = $scope.filteredCities;
                }
                if($scope.filteredStates !== undefined){
                   $scope.myCartItems = $scope.filteredStates;

                }
                if($scope.filteredCountries !== undefined){
                    $scope.myCartItems = $scope.filteredCountries;

                } 
        };