百度地图api应用标注地理位置信息(js版)

 
<div>
<p>搜索:
<input id="txtarea" type="text" size="50" />&nbsp;&nbsp;<input id="areaSearch"
type="button" value="搜索" style="cursor: pointer" />
</p>
<p> 纬度：<input name="txtlatitude" type="text" id="txtlatitude" style="width:200px;" />
经度：<input name="txtLongitude" type="text" id="txtLongitude" style="width:200px;" />
标注点所在区域：<input name="txtAreaCode" type="text" id="txtAreaCode" style="width:200px;" />
</p>
</div>
<div style="width: 420px; height: 340px; border: 1px solid gray; float: left;" id="container">
</div>
<div style="width: 350px; height: 340px;" id="Div1">
<div>
<div class="sel_container">
<strong id="curCity">北京市</strong> [<a id="curCityText" href="javascript:void(0)">更换城市</a>]</div>
<div class="map_popup" id="cityList" style="display: none;">
<div class="popup_main">
<div class="title">
城市列表</div>
<div class="cityList" id="citylist_container">
</div>
<button id="popup_close">
</button>
</div>
</div>
</div>
</div>

<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.3.min.js"></script> //jquery库
<script type="text/javascript" src="http://api.map.baidu.com/api?v=1.2"></script> //百度地图的文件
<script type="text/javascript" src="http://api.map.baidu.com/library/CityList/1.2/src/CityList_min.js"></script> //城市选择的

<script type="text/javascript">
var map = new BMap.Map("container");
map.centerAndZoom(new BMap.Point(117.10, 40.13), 11);
map.addControl(new BMap.NavigationControl());
map.addControl(new BMap.ScaleControl());
map.addControl(new BMap.OverviewMapControl());
map.addControl(new BMap.MapTypeControl());
//搜索
document.getElementById("areaSearch").onclick = function () {
// 创建地址解析器实例
var myGeo = new BMap.Geocoder();
var searchTxt = document.getElementById("txtarea").value;
// 将地址解析结果显示在地图上，并调整地图视野
myGeo.getPoint(searchTxt, function (point) {
if (point) {
map.centerAndZoom(point, 16);
document.getElementById("txtlatitude").value = point.lat;
document.getElementById("txtLongitude").value = point.lng;
var pointMarker = new BMap.Point(point.lng, point.lat);
geocodeSearch(pointMarker);

map.addOverlay(new BMap.Marker(point));
}
else
alert("搜索不到结果");
}, "全国");
}
map.enableScrollWheelZoom();
// 创建CityList对象，并放在citylist_container节点内
var myCl = new BMapLib.CityList({ container: "citylist_container", map: map });
// 给城市点击时，添加相关操作
myCl.addEventListener("cityclick", function (e) {
// 修改当前城市显示
document.getElementById("curCity").innerHTML = e.name;
// 点击后隐藏城市列表
document.getElementById("cityList").style.display = "none";
});
// 给“更换城市”链接添加点击操作
document.getElementById("curCityText").onclick = function () {
var cl = document.getElementById("cityList");
if (cl.style.display == "none") {
cl.style.display = "";
} else {
cl.style.display = "none";
}
};
// 给城市列表上的关闭按钮添加点击操作
document.getElementById("popup_close").onclick = function () {
var cl = document.getElementById("cityList");
if (cl.style.display == "none") {
cl.style.display = "";
} else {
cl.style.display = "none";
}
};

map.addEventListener("click", function (e) {
document.getElementById("txtlatitude").value = e.point.lat;
document.getElementById("txtLongitude").value = e.point.lng;
map.clearOverlays();
var pointMarker = new BMap.Point(e.point.lng, e.point.lat); // 创建标注的坐标
addMarker(pointMarker);
geocodeSearch(pointMarker);
});

function addMarker(point) {
var myIcon = new BMap.Icon("mk_icon.png", new BMap.Size(21, 25),
{ offset: new BMap.Size(21, 21),
imageOffset: new BMap.Size(0, -21)
});
var marker = new BMap.Marker(point, { icon: myIcon });
map.addOverlay(marker);
}
function geocodeSearch(pt) {
var myGeo = new BMap.Geocoder();
myGeo.getLocation(pt, function (rs) {
var addComp = rs.addressComponents;
document.getElementById("txtAreaCode").value = addComp.province + ", " + addComp.city + ", " + addComp.district;
});
}
</script>