百度地图经纬度定位查询
<div id="map03" class="wow zoomInLeft delay-3s" style="width: 100%"></div>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=VAELybEe5DU6rahaEMWZWQXikLphb9Z4"></script>
map3("map03", 121.298225,31.14042, '上海市松江区九亭寅西路358号');
function map3(str, jd, wd, add) {
        var map = new BMap.Map(str);
        var mPoint = new BMap.Point(jd, wd);
        map.enableScrollWheelZoom();
        map.centerAndZoom(mPoint, 50);
        var circle = new BMap.Circle(mPoint, 80, {
            fillColor: "rgba(31,142,255,.1)",
            strokeWeight: 1,
            fillOpacity: 1,
            strokeOpacity: 1
        });
        map.addOverlay(circle);
        var local = new BMap.LocalSearch(map, {
            renderOptions: {
                map: map,
                autoViewport: false
            }
        });
        // local.searchNearby(add,mPoint,1000);
        var marker = new BMap.Marker(mPoint); //创建marker对象
        marker.addEventListener("click", function (e) {
            searchInfoWindow1.open(marker);
        })
        map.addOverlay(marker); //在地图中添加marker
    }