若忽略语句，则映射API存储数据函数

我的存储数据有问题。。。它将数据保存到数据库中，并在地图上显示，所以基本上一切都正常，但当我保存标记的地址和名称，然后单击保存按钮时，我无法关闭它…

downloadUrl(url, function(data, responseCode) {
if (responseCode == 200 && data.length <= 1) {
  infowindow.close();
  document.getElementById("message").innerHTML = "Location added.";
}

从downloadUrl开始有一些不好的东西，似乎代码被忽略了，所以我发出了一个警报，让用户知道它被保存了。

如果有帮助的话，我会复制整个javascript(它还包括地理编码和样式图(：如果你愿意，我可以给你一个地图链接或任何你需要的东西。

var marker;
var infowindow;
var geocoder;
var map;
function initialize() {
  geocoder = new google.maps.Geocoder();
var styles = [
{
  "stylers": [
  { "hue": "#0055ff" },
  { "saturation": 90 },
  { "gamma": 0.39 },
  { "lightness": 48 },
  { "visibility": "on" },
  { "invert_lightness": true }
 ]
 },{
"featureType": "road",
"stylers": [
  { "hue": "#ff4500" }
]
},{
"elementType": "labels",
"stylers": [
  { "hue": "#00ff6f" },
  { "gamma": 6.31 },
  { "weight": 0.2 }
]
}
];
var SajatMap = new google.maps.StyledMapType(styles,
{name: "Saját Map"});

  var image=new google.maps.MarkerImage('resistance2.png',
  new google.maps.Size(23, 30),
  new google.maps.Point(0,0),
  new google.maps.Point(0, 32));
  var latlng = new google.maps.LatLng(47.495632, 19.044748);
    var options = {
      center: latlng,
      zoom: 12,
      mapTypeControlOptions: {
      mapTypeIds: [google.maps.MapTypeId.ROADMAP, 'sajat_map']
      }
    };
  map = new google.maps.Map(document.getElementById("map"), options);
  var infoWindow = new google.maps.InfoWindow();
map.mapTypes.set('sajat_map', SajatMap);
map.setMapTypeId('sajat_map');
var html = "<table>" +
             "<tr><td>Név:</td> <td><input type='text' id='name'/> </td> </tr>" +
             "<tr><td>Hely:</td> <td><input type='text' id='address'/></td> </tr>" +
             "<tr><td></td><td><input id='save' type='button' value='Mentés'    onclick='saveData()'/></td></tr>";
infowindow = new google.maps.InfoWindow({
 content: html
});

google.maps.event.addListener(map, "click", function(event) {
    marker = new google.maps.Marker({
      position: event.latLng,
      map: map
    });
    google.maps.event.addListener(marker, "click", function() {
      infowindow.open(map, marker);
    });
});
  downloadUrl("phpsqlajax_genxml.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 point = new google.maps.LatLng(
          parseFloat(markers[i].getAttribute("lat")),
          parseFloat(markers[i].getAttribute("lng")));
      var html = "<b>" + name + "</b> <br/>" + address;
      marker = new google.maps.Marker({
        map: map,
        icon:image,
        position: point
      });
      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 saveData() {
  var name = escape(document.getElementById("name").value);
  var address = escape(document.getElementById("address").value);
  var latlng = marker.getPosition();
  var url = "phpsqlinfo_addrow.php?name=" + name + "&address=" + address +
            "&lat=" + latlng.lat() + "&lng=" + latlng.lng();
            alert('Successfully saved!');
  downloadUrl(url, function(data, responseCode) {
    if (responseCode == 200 && data.length <= 1) {
      infowindow.close();
      document.getElementById("message").innerHTML = "Location added.";
    }
  });
 }
function codeAddress() {
var address = document.getElementById("kereso").value;
geocoder.geocode( { 'address': address}, function(results, status) {
  if (status == google.maps.GeocoderStatus.OK) {
    map.setCenter(results[0].geometry.location);
    var marker = new google.maps.Marker({
        map: map,
        position: results[0].geometry.location
    });
  } else {
    alert("Sikertelen. A probléma oka: " + status);
  }
});
}
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() {}