用js閉包的方法實現多點標註冒泡樣本

這兩天在做地圖這塊，一點點js代碼，各種坑。第一次接觸js，各種難，下面就這幾天的研究做一些總結，求坑
在事件監聽器中使用閉包

在執行事件監聽器時，通常可取的做法是將私人資料和持久性資料附加到對象中。JavaScript 不支援“私人”執行個體資料，但是支援允許內建函式訪問外部變數的閉包。在事件監聽器中，閉包非常適用於訪問通常不附加到發生事件的對象的變數。

以下樣本在事件監聽器中使用了函數閉包將加密訊息分配給一組標記。點擊每個標記將會看到加密訊息的一部分，該訊息並不包含在標記本身內。
複製代碼 代碼如下:
var map;
function initialize() {
var myLatlng = new google.maps.LatLng(-25.363882,131.044922);
var mapOptions = {
zoom: 4,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}

map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);

// Add 5 markers to the map at random locations.
var southWest = new google.maps.LatLng(-31.203405,125.244141);
var northEast = new google.maps.LatLng(-25.363882,131.044922);
var bounds = new google.maps.LatLngBounds(southWest,northEast);
map.fitBounds(bounds);
var lngSpan = northEast.lng() - southWest.lng();
var latSpan = northEast.lat() - southWest.lat();
for (var i = 0; i < 5; i++) {
var location = new google.maps.LatLng(southWest.lat() + latSpan * Math.random(),
southWest.lng() + lngSpan * Math.random());
var marker = new google.maps.Marker({
position: location,
map: map
});
var j = i + 1;
marker.setTitle(j.toString());
attachSecretMessage(marker, i);
}
}

// The five markers show a secret message when clicked
// but that message is not within the marker's instance data.
function attachSecretMessage(marker, number) {
var message = ["This","is","the","secret","message"];
var infowindow = new google.maps.InfoWindow(
{ content: message[number],
size: new google.maps.Size(50,50)
});
google.maps.event.addListener(marker, 'click', function() {
infowindow.open(map,marker);
});
}

這段代碼是從google官方裡面複製下來的

接下來我要實現從資料庫中讀取經緯度、地址資訊，在google map上進行標註並單擊標註出現資訊

要實現多點標註，以上代碼可以參考
複製代碼 代碼如下:
<script type="text/javascript" >
var map;
window.onload =function load() {

var number='<%=number %>';//擷取後台cs的pubilc的number的值
var address = new Array()
var weidu=new Array();
var jingdu=new Array();
var chepai = new Array();
<% for(int i=0;i<number;i++){ %>

weidu.push('<%=lan[i]%>');//從後台cs擷取經緯度的值
jingdu.push('<%=lon[i]%>');
address.push('<%=addr[i]%>');
chepai.push('<%=carnum[i] %>');
// var wei ;
// wei = chepai['<%=i%>'];
// alert(wei);
<% } %>

var Latlng = new google.maps.LatLng(weidu[0], jingdu[0]);
// var myLatlng = new google.maps.LatLng(25.273566, 110.290195);
var myOptions = {
zoom: 8,
center: Latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);////初始化一個地圖執行個體

for(var j=0;j<number;j++) //這裡卡了好久，原因是js的類型只有var；把js和cs弄混了一直用到《% %>，其實單純的js不需要，跟C差不多就可以了
{
var lat = weidu[j];
var lng = jingdu[j];
var addre = address[j];
var chepaihao = chepai[j];
// alert(j);
// alert(lat);
// var image = 'Image/webcam.png';
//設定標誌點
var myLatlng = new google.maps.LatLng(weidu[j ], jingdu[j ]);
var h = chepaihao;
var tit = h.toString();
var marker = new google.maps.Marker({
position: myLatlng,
map: map,
// icon: "http://google-maps-icons.googlecode.com/files/yellow08.png",
// icon: image, //通過icon可以設定自己想顯示的表徵圖，不設定則顯示Google map預設的表徵圖
title: tit //title表示滑鼠放到marker上要顯示的值。
});
attachSecretMessage(marker, j,addre,lat,lng);

}

}

function attachSecretMessage(marker, number,addre1,lat1,lng1) {

// var message = ["This", "is", "the", "secret", "message"];
var infowindow = new google.maps.InfoWindow(
{ content: "<span style='font-size:15px'><b>地址: </b>" + addre1 + "<br>"+ "經緯度："+ lat1 + "，"+ lng1 +"</span>",
size: new google.maps.Size(50, 50)
});
// infowindow.setContent("地址:"+ addre1 +"經度:" +lat1 + "緯度："+lng1);
//點擊彈出資訊視窗
google.maps.event.addListener(marker, 'click', function () {
infowindow.open(map, marker);
});
}

</script>

cs後端代碼：
複製代碼 代碼如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
public partial class Default2 : System.Web.UI.Page
{
public double[] la = new double[25];
public double[] ln = new double[25];
public int[] id = new int[25];
public string[] addr = new string[25];
public int number;


protected void Page_Load(object sender, EventArgs e)
{
string mycnnConnectionString1 = System.Configuration.ConfigurationManager.ConnectionStrings["testconect"].ConnectionString; //建立連接字串
SqlConnection mycnn1 = new SqlConnection(mycnnConnectionString1);
mycnn1.Open();
SqlCommand cmd1 = new SqlCommand("select L_ID,L_Lantitude,L_Longitude,L_Address from LatestPosition ", mycnn1);
SqlDataReader dr1 = cmd1.ExecuteReader();
int k2 = 0;
int k3 = 0;
int k4 = 0;
int k1 = 0;
// string buf1 = "";
double buf2 = 0;
double buf3 = 0;
int buf4 = 0;
string buf1 = "0";
while (dr1.Read())
{
//lat
buf2 = (double)dr1["L_Lantitude"];
la[k2] = buf2;
k2++;
//lng
buf3 = (double)dr1["L_Longitude"];///資料庫讀取float型的資料要用double
ln[k3] = buf3;
k3++;
//id
buf4 = (int)dr1["L_ID"];
id[k4] = buf4;
k4++;
buf1 = dr1["L_Address"].ToString();
addr[k1] = buf1;
k1++;

}
number = k4;
dr1.Close();
mycnn1.Close();

}


}