版本：
文件：
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/css/leaflet.extra-markers.min.css
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/img/markers_default.png
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/img/markers_default@2x.png
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/img/markers_shadow.png
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/img/markers_shadow@2x.png
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/js/leaflet.extra-markers.js
-
https://cdn.bootcdn.net/ajax/libs/leaflet-extra-markers/1.2.2/js/leaflet.extra-markers.min.js