百度地图 jsapi,javascript api

定位 https://lbs.baidu.com/index.php?title=jspopularGL/guide/geoloaction
坐标转换说明 https://lbs.baidu.com/index.php?title=jspopularGL/guide/coorinfo

demo
http://t.zoukankan.com/henuyuxiang-p-7525314.html