问将鼠标悬停在leaflet中的任一要素上时触发多个要素上的事件

EN

var layer_migration = L.layerGroup({
          layerName: 'layer_migration',
          pane: 'linesPane',
        });

function onEachFeature_migration (feature, layer) { 

     var polyline = L.polyline(layer.getLatLngs(),{
         color: "#8B0000",weight: 5,opacity: 0.4,dashArray: '8,8',
         dashOffset: 0
     }).addTo(layer_migration);
             

     var PLdecorator1 = L.polylineDecorator(polyline, {
            patterns: [{
              offset: '104%',
              repeat: 100,
              symbol: L.Symbol.arrowHead({pixelSize: 16,
                      pathOptions: {color: "#8B0000",fillOpacity: 0.6,weight: 0
                }
              })
          }]
     }).addTo(layer_migration)

     var myfeatures = L.featureGroup([polyline,PLdecorator1]).addTo(layer_migration);

     myfeatures.on('mouseover', function(e) {
         var layer = e.target;
             layer.setStyle({color: '#8B0000',opacity: 1,fillOpacity:1
            });
     });

}