<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>谷歌地图测试</title>
<style type="text/css">
#gmap{ width: 640px; height: 480px; }
</style>
<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=true"></script>
</head>
<body>
<input id="form_lat" type="hidden" name="lat" value="" />
<input id="form_lng" type="hidden" name="lng" value="" />
<input id="form_addr" type="text" name="addr" value="北京天安门" /><input id="form_position" type="button" value="定位" />
<div id="gmap"></div>
</body>
<script type="text/javascript">
window.onload = function()
{
document.getElementById("form_position").onclick=function(){
var addr = document.getElementById(‘form_addr‘).value;
gmap.setPoint(addr);
};
var addr = document.getElementById(‘form_addr‘).value;
gmap.init(‘gmap‘, {‘addr‘: addr, ‘mtitle‘: ‘北京‘, ‘mcontent‘: ‘这里是天安门‘});
}
var gmap = {
// 初始值
map: null,
point: null,
marker: null,
opt: {
addr: ‘‘,
lat: null,
lng: null,
mtitle: ‘‘,
mcontent: ‘‘,
form_lng: ‘form_lng‘,
form_lat: ‘form_lat‘
},
init: function(gmapId, option){
// 初始参数
for(var k in option){
this.opt[k] = option[k];
}
// 初始地图
var lat = this.opt.lat ? this.opt.lat : 11.530653202560947;
var lng = this.opt.lng ? this.opt.lng : 104.90425376000007;
this.point = new google.maps.LatLng(lat, lng);
this.map = new google.maps.Map(document.getElementById(gmapId), {
center: this.point,
zoom: 15,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
this.setMarker();
if( this.opt.addr != ‘‘ ){
this.setPoint(this.opt.addr);
}
},
setMarker: function(){
var self = this;
// 添加标记.
if( !this.marker ){
this.marker = new google.maps.Marker({
position: this.point,
draggable: true,
map: this.map,
title: ""
});
}else{
this.marker.setPosition(this.point);
}
// Marker添加点击事件
if( this.opt.mtitle != ‘‘ ){
var contentString = ‘<div id="content"><h1>‘+this.opt.mtitle+‘</h1>‘+
‘<p class="mapStyle">‘+this.opt.mcontent+‘</p></div>‘;
var infowindow = new google.maps.InfoWindow({
content: contentString
});
google.maps.event.addListener(self.marker, ‘click‘, function () {
infowindow.open(self.map, self.marker);
});
}
// 获取坐标
google.maps.event.addListener(self.marker, "dragend", function() {
self.point = self.marker.getPosition();
self.map.setCenter(self.point);
var lat = self.point.lat();
var lng = self.point.lng();
document.getElementById(self.opt.form_lng).value = lng;
document.getElementById(self.opt.form_lat).value = lat;
});
},
setPoint: function(addr){
// 根据地名来获取经纬度
var self = this;
var addr = addr ? addr : ‘柬埔寨‘;
var geocoder = new google.maps.Geocoder();
geocoder.geocode({‘address‘: addr}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
self.point = results[0].geometry.location;
} else {
var lat = 11.530653202560947;
var lng = 104.90425376000007;
self.point = new google.maps.LatLng(self.lat, self.lng);
}
self.map.setCenter(self.point);
self.setMarker();
});
}
}
</script>
</html>
效果如下：
原文：http://my.oschina.net/skq/blog/509241