百度地图多点路径加载以及调整页面js

 $(document).ready(function () {
 /*用正则表达式获取url传递的地址参数，split后获得地址数组*/
 bmap = new BMap.Map('mapcontainer');
 var point = new BMap.Point(116.404, 39.915);//地图中心点
 bmap.centerAndZoom(point, 15);//调整缩放以及设立中心点
 bmap.enableScrollWheelZoom();
 var locations = ["天安门", "北京邮电大学", "地坛公园", "北京师范大学"];
 var i = 0;
 var points=[];//保存目标点用于调整viewport
 var driving = new BMap.DrivingRoute(bmap, {
 policy : BMAP_DRIVING_POLICY_LEAST_TIME,
 onSearchComplete : function (results) {
 console.log(i);
 var path = results.getPlan(0).getRoute(0).getPath();
 var pathpoly = new BMap.Polyline(path, {
 strokeColor : "blue",
 strokeWeight : 6,
 strokeOpacity : 0.5
 });
 if (i === 0) {
 console.log('起点' + results.getStart());
 var start = new BMap.Marker(results.getStart().point);
 start.setTitle('起点：' + results.getStart().title);
 bmap.addOverlay(start);
 points.push(results.getStart().point);
 }
 var marker = new BMap.Marker(results.getEnd().point);
 points.push(results.getEnd().point);
 marker.setTitle('经过点' + (i + 1) + '：' + results.getEnd().title);
 bmap.addOverlay(pathpoly);
 bmap.addOverlay(marker);
 i++;
 if (i < locations.length - 1) {
 setTimeout(driving.search(locations[i], locations[i + 1]), 10000);//调用后面的路径
 } 
 bmap.setViewport(points);  }  });  driving.search(locations[0], locations[1]);//调用第一条路径
 });