js 百度地图 获取地图经纬度范围

//添加地图监听事件

map.addEventListener("dragend",function(e){
var bounds = map.getBounds(); //得到地图边界有maxx minx maxy miny

var sw = bounds.getSouthWest();

var ne = bounds.getNorthEast();
var pt = map.getBounds().getCenter();
window.status = "LON:" + pt.lng + " LAT:" + pt.lat;
alert(window.status);
alert('当前地图中心点：' + map.getCenter().lng + ',' + map.getCenter().lat);
});