百度地圖API自動根據點的經緯度來控制地圖顯示范圍

根據點的經緯度控制地圖顯示范圍：

//創建點
var point1 = new BMap.Point(lng1,lat1);
var point2 = new BMap.Point(lng2,lat2);

var points = [point1, point2];
var view = map.getViewport(eval(points));
var mapZoom = view.zoom; 
var centerPoint = view.center; 
map.centerAndZoom(centerPoint,mapZoom);