根据经纬度实现地图定位

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<html>
<head>
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    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
    <title>覆盖物的添加与移除</title>
      <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css" />
    <script src="https://cache.amap.com/lbs/static/es5.min.js"></script>
    <!--<script src="https://webapi.amap.com/maps?v=1.4.15&key=a57c435ea6151695ca43ae907c202392"></script>-->
    <script type="text/javascript" src="https://webapi.amap.com/maps?v=1.4.15&key=自己的key&plugin=AMap.Geocoder"></script>
    <link rel="stylesheet" href="https://a.amap.com/jsapi_demos/static/demo-center/css/demo-center.css"/>
    <style>
        html,
        body,
        #container {
          width: 100%;
          height: 100%;
        }
        
        label {
            width: 55px;
            height: 26px;
            line-height: 26px;
            margin-bottom: 0;
        }
        button.btn {
            width: 80px;
        }
        .content-window-card {
            position: relative;
            box-shadow: none;
            bottom: 0;
            left: 0;
            width: auto;
            padding: 0;
        }

        .content-window-card p {
            height: 2rem;
        }

        .custom-info {
            border: solid 1px silver;
        }

        div.info-top {
            position: relative;
            background: none repeat scroll 0 0 #F9F9F9;
            border-bottom: 1px solid #CCC;
            border-radius: 5px 5px 0 0;
        }

        div.info-top div {
            display: inline-block;
            color: #333333;
            font-size: 14px;
            font-weight: bold;
            line-height: 31px;
            padding: 0 10px;
        }

        div.info-top img {
            position: absolute;
            top: 10px;
            right: 10px;
            transition-duration: 0.25s;
        }

        div.info-top img:hover {
            box-shadow: 0px 0px 5px #000;
        }

        div.info-middle {
            font-size: 12px;
            padding: 10px 6px;
            line-height: 20px;
        }

        div.info-bottom {
            height: 0px;
            width: 100%;
            clear: both;
            text-align: center;
        }

        div.info-bottom img {
            position: relative;
            z-index: 104;
        }

        span {
            margin-left: 5px;
            font-size: 11px;
        }

        .info-middle img {
            float: left;
            margin-right: 6px;
        }
    </style>
</head>
<body>
    <div id="container"></div>
<script>    
    var map = new AMap.Map("container", {
        resizeEnable: true,
        center: [117.127318, 31.830790],
        zoom: 16
    });
    var geocoder = new AMap.Geocoder({
        city: "010", //城市设为北京，默认：“全国”
        radius: 1000 //范围，默认：500
    });
    
    regeoCode('116.39,39.8');
    
    function regeoCode(v) {
        
        var lnglat  = v.split(',');
        
        geocoder.getAddress(lnglat, function(status, result) {
            if (status === 'complete'&&result.regeocode) {
                var address = result.regeocode.formattedAddress;
                console.log(address);
            }else{
//              log.error('根据经纬度查询地址失败')
            }
        });
    }
    
    addMarker();
    //添加marker标记
    function addMarker() {
        map.clearMap();
        var marker = new AMap.Marker({
            map: map,
            position: [117.127318, 31.830790]
        });
        //鼠标点击marker弹出自定义的信息窗体
        AMap.event.addListener(marker, 'click', function () {
            infoWindow.open(map, marker.getPosition());
    });
    
    //实例化信息窗体
    var title = '方恒假日酒店<span style="font-size:11px;color:#F00;">价格:318</span>',
    content = [];
    content.push("<img src='http://tpc.googlesyndication.com/simgad/5843493769827749134'>地址：北京市朝阳区阜通东大街6号院3号楼东北8.3公里");
    content.push("电话：010-64733333");
    content.push("<a href='https://ditu.amap.com/detail/B000A8URXB?citycode=110105'>详细信息</a>");
    var infoWindow = new AMap.InfoWindow({
        isCustom: true,  //使用自定义窗体
        content: createInfoWindow(title, content.join("<br/>")),
        offset: new AMap.Pixel(16, -45)
    });
    
    //构建自定义信息窗体
    function createInfoWindow(title, content) {
        var info = document.createElement("div");
        info.className = "custom-info input-card content-window-card";
    
        //可以通过下面的方式修改自定义窗体的宽高
        //info.style.width = "400px";
        // 定义顶部标题
        var top = document.createElement("div");
        var titleD = document.createElement("div");
        var closeX = document.createElement("img");
        top.className = "info-top";
        titleD.innerHTML = title;
        closeX.src = "https://webapi.amap.com/images/close2.gif";
        closeX.onclick = closeInfoWindow;
    
        top.appendChild(titleD);
        top.appendChild(closeX);
        info.appendChild(top);
    
        // 定义中部内容
        var middle = document.createElement("div");
        middle.className = "info-middle";
        middle.style.backgroundColor = 'white';
        middle.innerHTML = content;
        info.appendChild(middle);
    
        // 定义底部内容
        var bottom = document.createElement("div");
        bottom.className = "info-bottom";
        bottom.style.position = 'relative';
        bottom.style.top = '0px';
        bottom.style.margin = '0 auto';
        var sharp = document.createElement("img");
        sharp.src = "https://webapi.amap.com/images/sharp.png";
        bottom.appendChild(sharp);
        info.appendChild(bottom);
        return info;
    }
}
    
    //关闭信息窗体
function closeInfoWindow() {
    map.clearInfoWindow();
}
</script>
</body>
</html>
根据经纬度实现地图定位

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