百度地图添加折线

var map = new BMap.Map("container");
var point_start = new BMap.Point(120.28429,31.52853);  // 创建起点坐标
var pointA = new BMap.Point(119.59794,31.72322);  // 创建点坐标A
var point_end = new BMap.Point(119.88116,32.31841);  // 创建终点坐标
var polyline = new BMap.Polyline([point_start,pointA,point_end], {strokeColor:"#ff6600", strokeWeight:6, strokeOpacity:1});  //定义折线
map.addOverlay(polyline);     //添加折线到地图上