-1
這是我第一次發佈在這裏，我總是閱讀偉大的解決方案。我陷入了困境，我不太確定我是否正沿着正確的道路前進。谷歌地圖刷新標記
基本上我想顯示在谷歌地圖上的汽車數量的位置，現在我通過另一個程序獲取GPS信息，數據正在更新到MS Access數據庫。我需要頁面每10秒刷新一次標記，並且每5分鐘刷新一次流量數據。
P.S.我知道MS Access數據庫是舊帽子，這是另一個應該很快會改變的故事！
這是我更新的頁面代碼： -
<!DOCTYPE html>
<html>
<%
'declare the variable that will hold new connection object
Dim Connection
'create an ADO connection object
Set Connection=Server.CreateObject("ADODB.Connection")
'declare the variable that will hold the connection string
Dim ConnectionString
'define connection string, specify database driver and location of the database
ConnectionString="PROVIDER=Microsoft.Jet.OLEDB.4.0;" & "Data Source= c:\easybook\tables.mdb"
'open the connection to the database
Connection.Mode=adModeRead
Connection.Open ConnectionString
%>
<head>
<title>Live Map Display</title>
<meta content="text/html; charset=UTF-8" http-equiv="content-type" />
<link href="assets/css/ticketstyle.css" media="all" rel="stylesheet" type="text/css" />
<script src="assets/js/jquery.min.js"></script>
<script src="http://maps.google.com/maps/api/js" type="text/javascript"></script>
<script>
var map;
var mapMarkers = []; // Array is declared and initialized here
function initialize() {
map = new google.maps.Map(document.getElementById('map'), {
zoom: 14,
panControl: false,
zoomControl: false,
mapTypeControl: false,
streetViewControl: false,
overviewMapControl: false,
center: new google.maps.LatLng(53.39659541993,-2.54446649561),
mapTypeId: google.maps.MapTypeId.ROADMAP
});
var trafficLayer = new google.maps.TrafficLayer();
trafficLayer.setMap(map);
var auto_remove = true;
/*window.setInterval(function() {loadMarkers()}, 1000); // refreshes every 10 seconds*/
};
function loadMarkers() {
for (var i = 0; i < mapMarkers.length; i++) {
mapMarkers[i].setMap(null); // removes marker from the map
}
mapMarkers = []; // reinitialize the array
var markers = document.getElementsByTagName("car");
for (var i = 0; i < markers.length; i++) {
location = {
label : markers[i].getAttribute("label"),
icon : markers[i].getAttribute("image"),
labelClass: "labels", // the CSS class for the label
pointlat : parseFloat(markers[i].getAttribute("lat")),
pointlng : parseFloat(markers[i].getAttribute("lng"))
};
console.log(location);
mapMarkers.push(new google.maps.Marker({
position: new google.maps.LatLng(location.pointlat, location.pointlng),
map: map,
labelClass: "label", // the CSS class for the label
label : markers[i].getAttribute("label"),
icon : markers[i].getAttribute("image"),
})
);
}
document.getElementById('car');
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
<script src="http://ajax.googleapis.com/ajax/
libs/jquery/1.3.0/jquery.min.js" type="text/javascript"></script>
</head>
<body>
<%
'declare the variable that will hold our new object
Dim Recordset
'create an ADO recordset object
Set Recordset=Server.CreateObject("ADODB.Recordset")
'declare the variable that will hold the SQL statement
Dim SQL
SQL="SELECT * FROM cartable WHERE stat>0"
Dim carno, stat, Lat, Lng
'Open the recordset object executing the SQL statement and return records
Recordset.Open SQL, Connection
%><%
'first of all determine whether there are any records
If Recordset.EOF Then
Response.Write("")
Else
'if there are records then loop through the fields
%>
<div id="header">
<div id="header-left">
<h1>MapLive</h1>
</div>
<div id="header-right">
</div>
</div>
<div id="main">
<cars>
<%Do While NOT Recordset.Eof %>
<car lng='<%Response.write Recordset("long")%>' lat='<%Response.write Recordset("lat")%>' label='<%Response.write Recordset("carno")%>' image='assets/images/loc-stat<%Response.write Recordset("stat")%>.png'/>
<%Recordset.MoveNext
Loop
End If
%>
</cars>
<div id="map"></div>
</div>
</body>
<%
Recordset.Close
Set Recordset=Nothing
Connection.Close
Set Connection=Nothing
%>
</html>
希望有人能提供一些線索，我怎麼刷新標記，被抓我的頭，和其他的例子，我看不同編碼的，我猜這是Google Maps API v3。
感謝您的時間提前...
院長
謝謝您的回覆，我正在努力編寫該代碼。你能給我一個例子，關於如何使用數組？ – Dean
我已經添加了如何在我的編輯中做到這一點。爲了簡單起見，我將數組設置爲全局。 window.setInterval將每x毫秒調用一次函數'loadMarkers'。 –
謝謝，得到en SyntaxError：缺少）在線56上的參數列表後。 – Dean