引用自：http://zhaoziang.com/amap/picpoint.html
<script>
………………….
function getLnglat(e) {//e=鼠标点击位置
mapObj.clearMap();//获取位置之前清除之前的坐标，不管之前是否有坐标已保存
var x = e.lnglat.getLng();//获取经度
var y = e.lnglat.getLat();//纬度
document.getElementById("lnglat").innerHTML = x + "," + y;//写入控件
</script>
CODE
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>酸奶小妹的火星坐标</title>
<script language="javascript" src="http://webapi.amap.com/maps?v=1.2&key=YOUKEY "></script>
<style>
#iMap {
height: 500px;
width: 600px;
float: left;
}
.info {
float: left;
margin: 0 0 0 10px;
}
label {
width: 80px;
float: left;
}
.detail {
padding: 10px;
border: 1px solid #aaccaa;
}
</style>
</head>
<body onload="mapInit()">
<div id="iMap"></div>
<div class="info">
<h1>坐标拾取工具（GCJ-02坐标）</h1>
<p>说明：</p>
<p>1、鼠标滚轮可以缩放地图，拖动地图。</p>
<p>2、点击地图，即可获得GCJ-02的经纬度坐标，即火星坐标。</p>
</br>
<div class="detail">
<p><span id="lnglat"> </span></p>
<p><span id="iAddress"> </span></p>
</div>
</div>
<!-- tongji begin-->
<script type="text/javascript">
var _bdhmProtocol = (("https:" == document.location.protocol) ? " https://" : " http://");
document.write(unescape("%3Cscript src='" + _bdhmProtocol + "hm.baidu.com/h.js%3Faeff88f19045b513af7681b011cea3bd' type='text/javascript'%3E%3C/script%3E"));
</script>
<!-- tongji end -->
</body>
<script language="javascript">
var mapObj;
var lnglatXY;
//初始化地图
function mapInit() {
var opt = {
level: 10, //设置地图缩放级别
center: new AMap.LngLat(116.397428, 39.90923) //设置地图中心点
}
mapObj = new AMap.Map("iMap", opt);
AMap.event.addListener(mapObj, 'click', getLnglat); //点击事件
}
function geocoder() {
var MGeocoder;
//加载地理编码插件
mapObj.plugin(["AMap.Geocoder"], function () {
MGeocoder = new AMap.Geocoder({
radius: 1000,
extensions: "all"
});
//返回地理编码结果
AMap.event.addListener(MGeocoder, "complete", geocoder_CallBack);
//逆地理编码
MGeocoder.getAddress(lnglatXY);
});
//加点
var marker = new AMap.Marker({
map: mapObj,
icon: new AMap.Icon({
image: "http://api.amap.com/Public/images/js/mark.png",
size: new AMap.Size(58, 30),
imageOffset: new AMap.Pixel(-32, -0)
}),
position: lnglatXY,
offset: new AMap.Pixel(-5, -30)
});
// mapObj.setFitView();
}
//回调函数
function geocoder_CallBack(data) {
var address;
//返回地址描述
address = data.regeocode.formattedAddress;
//返回结果拼接输出
document.getElementById("iAddress").innerHTML = address;
}
//鼠标点击，获取经纬度坐标
function getLnglat(e) {
mapObj.clearMap();
var x = e.lnglat.getLng();
var y = e.lnglat.getLat();
document.getElementById("lnglat").innerHTML = x + "," + y;
lnglatXY = new AMap.LngLat(x, y);
geocoder();
}
</script>
</html>
