【发布时间】：2012-11-17 14:53:20
【问题描述】：
我使用该程序的主要目标是生成显示特定建筑物位置的 Google 地图。
由于 Google 的限制原因，我已经为我在 MS SQL 数据库（它是一个房地产网站）中分析的所有建筑物生成并存储了所有纬度和经度。每次选择一栋建筑物时，我都会检索其相应的纬度和经度并将其存储在两个 asp:Label 中。我在 Javascript 中使用脚本来处理通过两个 asp:Label 传递的纬度和经度。我的问题是，由于某种原因，LatLng 函数似乎不起作用，我的地图没有显示它们应该显示的坐标。我想我可能对 LatLng 期望的变量类型有疑问。我已经尝试过传递的默认字符串并将变量转换为真实类型。这是脚本。任何帮助或建议表示赞赏：
<script type="text/javascript">
(function () {
// Defining global variables
var map, geocoder, marker, infowindow, propertyaddress, selectedbuilding, maplatitude, maplongitude, buildinglatlng, latlng, myOptions;
function InitializeMap() {
//propertyaddress = '400 Alton Road, Miami Beach, FL 33139';
propertyaddress = document.getElementById('<%=lblselectedHiddenBuildingAddress.ClientID%>').innerText;
selectedbuilding = document.getElementById('<%=lblMainBuilding.ClientID%>').innerText;
//maplatitude = parseFloat(document.getElementById('<%=lblCoordinateLatitud.ClientID%>').innerText);
//maplongitude = parseFloat(document.getElementById('<%=lblCoordinateLongitud.ClientID%>').innerText);
maplatitude = document.getElementById('<%=lblCoordinateLatitud.ClientID%>').innerText;
maplongitude = document.getElementById('<%=lblCoordinateLongitud.ClientID%>').innerText;
buildinglatlng = new google.maps.LatLng(maplatitude, maplongitude);
//window.alert("Processed propertyaddress");
//latlng = new google.maps.LatLng(25.76804, -80.132743);
// Creating an object literal containing the properties
// we want to pass to the map
myOptions = {
zoom: 15,
center: new google.maps.LatLng(maplatitude, maplongitude),
//center: buildinglatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP,
scaleControl: true,
streetViewControl: true,
disableDefaultUI: true,
mapTypeControl: true,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
position: google.maps.ControlPosition.TOP_LEFT,
mapTypeIds: [
google.maps.MapTypeId.ROADMAP,
google.maps.MapTypeId.TERRAIN,
google.maps.MapTypeId.SATELLITE
]
},
navigationControl: true,
navigationControlOptions: {
position: google.maps.ControlPosition.TOP_LEFT
}
};
// Creating the map
map = new google.maps.Map(document.getElementById("map"), myOptions);
}
window.onload = InitializeMap;
})();
</script>
添加了工作但使用地理编码器的代码
#例如，以下代码可以完美运行，但它使用了地理编码器。传递变量不是问题。 LatLng 以及它对传递的变量的作用有些奇怪。不过，它确实获得了所有重要位置的值。
<script type="text/javascript">
(function () {
// Defining global variables
var map, geocoder, marker, infowindow, propertyaddress, selectedbuilding, maplatitude, maplongitude, buildinglatlng, latlng, myOptions;
function InitializeMap() {
//propertyaddress = '400 Alton Road, Miami Beach, FL 33139';
propertyaddress = document.getElementById('<%=lblselectedHiddenBuildingAddress.ClientID%>').innerText;
selectedbuilding = document.getElementById('<%=lblMainBuilding.ClientID%>').innerText;
//maplatitude = parseFloat(document.getElementById('<%=lblCoordinateLatitud.ClientID%>').innerText);
//maplongitude = parseFloat(document.getElementById('<%=lblCoordinateLongitud.ClientID%>').innerText);
maplatitude = document.getElementById('<%=lblCoordinateLatitud.ClientID%>').innerText;
maplongitude = document.getElementById('<%=lblCoordinateLongitud.ClientID%>').innerText;
buildinglatlng = new google.maps.LatLng(maplatitude, maplongitude);
//window.alert("Processed propertyaddress");
//latlng = new google.maps.LatLng(25.76804, -80.132743);
if (!geocoder) {
geocoder = new google.maps.Geocoder();
}
// Creating a GeocoderRequest object
var geocoderRequest = {
address: propertyaddress
}
geocoder.geocode(geocoderRequest, function (results, status) {
// Check if status is OK before proceeding
if (status == google.maps.GeocoderStatus.OK) {
// Center the map on the returned location
//map.setCenter(results[0].geometry.location);
// Creating an object literal containing the properties
// we want to pass to the map
myOptions = {
zoom: 15,
//center: new google.maps.LatLng(maplatitude, maplongitude),
center: results[0].geometry.location,
mapTypeId: google.maps.MapTypeId.ROADMAP,
scaleControl: true,
streetViewControl: true,
disableDefaultUI: true,
mapTypeControl: true,
mapTypeControlOptions: {
style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR,
position: google.maps.ControlPosition.TOP_LEFT,
mapTypeIds: [
google.maps.MapTypeId.ROADMAP,
google.maps.MapTypeId.TERRAIN,
google.maps.MapTypeId.SATELLITE
]
},
navigationControl: true,
navigationControlOptions: {
position: google.maps.ControlPosition.TOP_LEFT
}
};
// Creating the map
map = new google.maps.Map(document.getElementById("map"), myOptions);
// Check to see if we've already got a Marker object
if (!marker) {
// Creating a new marker and adding it to the map
marker = new google.maps.Marker({
map: map,
animation: google.maps.Animation.DROP
});
google.maps.event.addListener(marker, 'click', toggleBounce);
}
// Setting the position of the marker to the returned location
marker.setPosition(results[0].geometry.location);
// Check to see if we've already got an InfoWindow object
google.maps.event.addListener(marker, 'click', function () {
if (!infowindow) {
// Creating a new InfoWindow
infowindow = new google.maps.InfoWindow();
}
// Creating the content of the InfoWindow to the address
// and the returned position
var content = '<h2>' + selectedbuilding + '</h2>';
//content += 'Lat: ' + results[0].geometry.location.lat() + '<br />';
//content += 'Lng: ' + results[0].geometry.location.lng();
// Adding the content to the InfoWindow
infowindow.setContent(content);
// Opening the InfoWindow
infowindow.open(map, marker);
});
// Triggering the click event
google.maps.event.trigger(marker, 'click');
};
});
}
function toggleBounce() {
if (marker.getAnimation() != null) {
marker.setAnimation(null);
} else {
marker.setAnimation(google.maps.Animation.BOUNCE);
}
}
window.onload = InitializeMap;
})();
</script>
问候， 埃利亚斯
【问题讨论】：
-
问题可能出在您对
innerText的使用上（请参阅stackoverflow.com/questions/1359469/…）。如果您提醒maplatitude和maplongitude，会发生什么？ -
不，它不是 innerText，因为我正在传递地址，例如以下代码可以完美运行，但使用地理编码器会收取很多费用：
标签： javascript asp.net vb.net google-maps variables