您好，我在删除地图上的标记时遇到问题。我做了一个事件，如果我的下拉菜单会改变标记将被删除。到目前为止它不起作用。会感谢任何人我做错了什么。这是我的代码。将删除覆盖的功能是filtermark()。对不起，我是 javascript 的菜鸟。
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(10.4167, 123.0000),
zoom: 8,
mapTypeId: 'roadmap'
});
var infoWindow = new google.maps.InfoWindow;
downloadUrl("xmlspitter.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var address = markers[i].getAttribute("address");
var type = markers[i].getAttribute("type");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var html = "<b>" + name + "</b> <br/>" + address;
var icon = customIcons[type] || {};
var marker = new google.maps.Marker({
map: map,
position: point,
icon: icon.icon,
shadow: icon.shadow
});
bindInfoWindow(marker, map, infoWindow, html);
}
});
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
}
//]]>
function filtermark(){
google.maps.Map.prototype.clearMarkers = function() {
for(var i=0; i < this.markers.length; i++){
this.markers[i].setMap(null);
}
this.markers = new Array();
};
}