百度地图API 鼠标滚动以选中点缩放

Question

百度地图API 鼠标滚动总是以中心点缩放，而不以选中点缩放。
百度地图API

Answer 1

可以在点选中点的时候，把地图容器的center设置到这个点，剩下就ok了。

Answer 2

<script type="text/javascript">  
            function locMap(lon, lat, FName) {  
                var phone={ enableMessage:false}
                var info=new BMap.InfoWindow(FName,phone); 
                var map1 = new BMap.Map("allmap");
                map1.centerAndZoom(new BMap.Point(lon, lat), 9);
                var point1 = new BMap.Point(lon, lat);
                var er1 = new BMap.Marker(point1);
                map1.enableScrollWheelZoom();
                map1.enableInertialDragging();
                map1.enableContinuousZoom();
                
                map1.addControl(new BMap.OverviewMapControl());
                map1.addControl(new BMap.NavigationControl()); 
                map1.addControl(new BMap.ScaleControl());      // 添加比例尺控件 
                map1.enableScrollWheelZoom();                  //启用滚轮放大缩小
                map1.addOverlay(er1);
                
                var cp = point1;//cp为临时point
                map1.addEventListener("tilesloaded",function(){//加载完成时,触发 
                map1.setCenter(cp); 
                
                map1.addEventListener("click", function(e){
                  var lngs=""+e.point.lng+"";
                  var lats=""+e.point.lat+"";
                  locateMsg(lngs,lats);
                  map1.clearOverlays(); 
                  var pointMarker = new BMap.Point(e.point.lng, e.point.lat); // 创建标注的坐标 
                  addMarker(pointMarker); 
                 });
                
                }); 
                function addMarker(point) { 
                    var myIcon = new BMap.Icon("../App_Themes/Default/images/mk_icon.png", new BMap.Size(25, 50), 
                    { offset: new BMap.Size(25, 50), 
                    imageOffset: new BMap.Size(4, 0) 
                    }); 
                    var er2 = new BMap.Marker(point, { icon: myIcon }); 
                    map1.addOverlay(er2); 
                } 
                //添加标注
                addInfo(info,er1);
            } 
            //创建标注
            function addInfo(infos,er) {
                er.addEventListener("onclick", function() { this.openInfoWindow(infos) }); 
            } 
 </script>

Answer 3

选中点设置后，设置这个点为中心点。map.centerAndZoom(point,16);