百度地图开发者API学习笔记二

一，地图上多个覆盖物(Marker).
当有多个覆盖物时，我们需要获取每个点的信息。如下图，每个Marker的经度都不相同
百度地图开发者API学习笔记二-LMLPHP
二，代码：
<!DOCTYPE html>

<html>

<head>

    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />

    <style type="text/css">

        body, html, #allmap {

            width: 100%;

            height: 100%;

            overflow: hidden;

            margin: 0;

            font-family: "微软雅黑";

            font-size: 14px;

        }

    </style>

    <script type="text/javascript" src="http://libs.baidu.com/jquery/1.9.1/jquery.min.js"></script>

    <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=31hnqKEhOUOWFXXxvWYXiM1v"></script>

    <!--加载鼠标绘制工具-->

    <script type="text/javascript" src="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.js"></script>

    <link rel="stylesheet" href="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.css" />

    <title></title>

</head>

<body>

<div id="allmap">

</div>

</body>

</html>

<script type="text/javascript">

    // 百度地图API功能

    var map = new BMap.Map("allmap");

    var point = new BMap.Point(116.404, 39.915);

    map.centerAndZoom(point, 15);

    map.enableScrollWheelZoom();

    map.enableContinuousZoom();

    // 随机向地图添加5个标注

    var bounds = map.getBounds();

    var sw = bounds.getSouthWest();

    var ne = bounds.getNorthEast();

    var lngSpan = Math.abs(sw.lng - ne.lng);

    var latSpan = Math.abs(ne.lat - sw.lat);

    for (var i = 0; i < 5; i ++) {

        var point = new BMap.Point(sw.lng + lngSpan * (Math.random() * 0.7), ne.lat - latSpan * (Math.random() * 0.7));

        var marker = new BMap.Marker(point);

        var html = "经度"+point.lng;

        //设置infoWindow的大小

        var fourOpts = {

            width:50,

            height:25

        }

        var infoWindow = new BMap.InfoWindow(html,fourOpts);

        marker.infoWindow=infoWindow;

        marker.addEventListener("click", function(e){

            //*********这里是重点*********，当有多个点时获取每个点的信息

            this.openInfoWindow(e.target.infoWindow);

        });

        map.addOverlay(marker);

    }

</script>