javascript - Leaflet:是否有像 panTo 或 setView 这样的方法在缩小或放大时不居中

Question

我有一个 zoomend 函数，在它里面，是一个 if else 缩放值，我使用 panTo 或 setView 来缩放 latlng。但我不想在缩小时将其居中？

findMapNo(no).map.on("zoomend", function (e) {
            zoom = this.getZoom();
            console.log("zoomValue:",zoom);
            var diff = Oldzoom - zoom; 

            if(diff > 0 || diff < 0){ 
                //console.log('zoomed out');
                findMapNo(no).map.removeLayer(markersLayer);
                findMapNo(no).map.addLayer(markersCluster);
                findMapNo(no).map.closePopup(popup);

                diff = 0;
            } else if(diff == 0){
                //console.log('no change');
                findMapNo(no).map.removeLayer(markersCluster);
                findMapNo(no).map.addLayer(markersLayer);
                findMapNo(no).map.panTo(latLng); 
                findMapNo(no).map.openPopup(popup);
            }
            findMapNo(no).map.panTo(latLng); 
        });

Answer 1

将您的代码更新为:

findMapNo(no).on("zoomend", function (e) {
            zoom = this.getZoom();
            console.log("zoomValue:",zoom);
            var diff = Oldzoom - zoom; 

            if(diff > 0 || diff < 0){ 
                if(diff > 0){
                    console.log('zoomed out');
                }else{                   
                    console.log('zoomed in');
                    findMapNo(no).map.panTo(latLng); 
                 }
                findMapNo(no).map.removeLayer(markersLayer);
                findMapNo(no).map.addLayer(markersCluster);
                findMapNo(no).map.closePopup(popup);
            } else if(diff == 0){
                console.log('no change');
                findMapNo(no).map.removeLayer(markersCluster);
                findMapNo(no).map.addLayer(markersLayer);
                findMapNo(no).map.panTo(latLng); 
                findMapNo(no).map.openPopup(popup);
            }
            // I don't know if you do this elsewhere
            Oldzoom = zoom;
        });

如果您不想让 map 居中，请不要使用 panTo 或 setView。当您不想将 map 居中时，为什么要设置 latlng？