使用的时候记得更改百度地图的开发者KEY
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>凨-百度地图API之地图标注(JS版)，地理位置信息，根据地址获取经度纬度</title>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=8277432c34c6f58ba75d3a541ed2559e"></script>
</head>
<body>
<div>
<p>搜索:
<input id="keyword" type="text" size="50"/> <input id="Search" type="button" value="搜索"
style="cursor: pointer"/>
</p>
<p> 纬度：<input name="lng" type="text" id="lng" style="width:200px;" value="120.570464"/>
经度：<input name="lat" type="text" id="lat" style="width:200px;" value="31.300216"/>
标注点所在区域：<input name="address" type="text" id="address" 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;">
<input id="biao" type="button" value="标注" style="cursor: pointer"/>
</div>
<script type="text/javascript">
var map = new BMap.Map("container");
//创建地址解析的实例
var myGeo = new BMap.Geocoder();
var lng = $('#lng').val(), lat = $('#lat').val();
//默认根据IP读取当前城市
var LocalCity = true;
//默认北京市,或经度纬度不正确情况下
if (!lng || !lat) {
lng = 116.331398;
lat = 39.897445;
} else {
LocalCity = false;
}
//设置地图中心坐标
map.centerAndZoom(new BMap.Point(lng, lat), 12);
//添加默认缩放平移控件
map.addControl(new BMap.NavigationControl());
//开启缩小放大
map.enableScrollWheelZoom();
//当前城市
if (LocalCity) {
var myCity = new BMap.LocalCity();
myCity.get(setCenter);
}else{
//设置覆盖物
var point = new BMap.Point(lng, lat);
setPoint(point);
}
//搜索
$('#Search').bind('click', function () {
//清空覆盖物
map.clearOverlays();
var searchTxt = $("#keyword").val();
myGeo.getPoint(searchTxt, function (point) {
setPoint(point);
}, "全国");
});
//搜索
$('#biao').bind('click', function () {
//清空覆盖物
map.clearOverlays();
var center = map.getCenter();
var point = new BMap.Point(center.lng, center.lat);
setPoint(point);
});
/**
* 回调函数
*/
function setCenter(result) {
var cityName = result.name;
//把地图设置当前城市
map.setCenter(cityName);
}
/**
* 设置覆盖物，获取坐标
* @param point
*/
function setPoint(point) {
if (point) {
//坐标赋值
$('#lng').val(point.lng);
$('#lat').val(point.lat);
Geocoder(point);
map.centerAndZoom(point, 12);
var marker = new BMap.Marker(point);
map.addOverlay(marker);
marker.enableDragging();//可以拖动
//创建信息窗口
var infoWindow = new BMap.InfoWindow("这就是您公司的位置。<br/>如果不正确，请拖动红色图标");
//显示窗口
marker.openInfoWindow(infoWindow);
//点击监听
marker.addEventListener("click", function () {
this.openInfoWindow(infoWindow);
});
//拖动监听
marker.addEventListener("dragend", function (e) {
//坐标赋值
$('#lng').val(e.point.lng);
$('#lat').val(e.point.lat);
Geocoder(e.point);
});
}
}
/**
* 根据坐标获取地址
* @param point
* @constructor
*/
function Geocoder(point) {
var gc = new BMap.Geocoder();
gc.getLocation(point, function (rs) {
var addComp = rs.addressComponents;
$('#address').val(addComp.province + ", " + addComp.city + ", " + addComp.district + ", " + addComp.street + ", " + addComp.streetNumber);
});
}
</script>
</body>
</html>
