高德地图进阶开发实战案例(3):标注、信息弹窗和清除覆盖物

 var map = new AMap.Map("container", {resizeEnable: true});
    var lnglats = [
        [116.368904, 39.923423],
        [116.382122, 39.921176],
        [116.387271, 39.922501],
        [116.398258, 39.914600]
    ];

    var infoWindow = new AMap.InfoWindow({offset: new AMap.Pixel(0, -30)});

    var markers = [];//标注点信息集合
    for (var i = 0, marker; i