透過Map物件,抓取LatLngBounds , 即可再得到東北 , 西南的坐標,接下就可以再做別的事了! 參考: map.getBounds().getSouthWest(); map.getBounds().getNorthEast(); API說明: Map https://developers.google.com/maps/documentation/javascript/reference?hl=zh-tw#Map LatLngBounds https://developers.google.com/maps/documentation/javascript/reference?hl=zh-tw#LatLngBounds