点击标记时，地理编码器返回之前存储的值 [英] geocoder is returning previously stored value when click on a marker

问题描述

我使用google map api v3（javascript）实施地理编码器。我正在放置多个标记，当我点击标记时，我想要相应的地址进入信息窗口。但是当我点击标记时，最初地址的默认值（按代码地理地址不可用！）即将到来，当我点击第二个标记时，它具有先前点击的标记的地址。

I'm implementing geocoder using google map api v3 (javascript). I'm putting mutiple markers and when i click on marker i want the corresponding address to come in the info-window. But when i click on the marker, initially the default value of address(As per code Geo-Address Unavailable!) is coming and when i click the second marker it is having the address of the previously clicked marker. I'm attaching the piece of code.

    var addr=" Geo-Address Unavailable!";
    var geocoder = new google.maps.Geocoder();
    for(var i = 0; i < latLngs.length-1; i++){ //latLngs is the array of latlongs
       marker = new google.maps.Marker({
        position: latlng,
        id:markerId,
        icon: image,
        map: map,
        animation : google.maps.Animation.DROP,
             });
     }
     markers[markerId] = marker;
      var infowindow = new google.maps.InfoWindow({
                    content: "loading..."
                });
                google.maps.event.addListener(marker, "click", function () {
                    geocoder.geocode({'latLng': this.getPosition()}, function(results, status) {
                        if (status == google.maps.GeocoderStatus.OK) {
                                addr = results[0].formatted_address;

                            }
                    });

                    infowindow.setContent(addr);
                    infowindow.open(map, this);
                });

推荐答案

地理编码是异步的。您必须在地理编码器的回调中使用返回的值。

Geocoding is asynchronous. You have to use the returned value inside the callback from the geocoder.

发生了什么：

What is happening:

1. 您向地理编码器发送请求。


2. 显示响应


3. 响应从地理编码器返回
>

4. 您向地理编码器发送另一个请求


5. 显示第一个请求的响应


6. 响应返回从地理编码器到第二个请求

1. you send off a request to the geocoder.
2. you display the response
3. the response comes back from the geocoder
4. you send off another request to the geocoder
5. you display the response to the first request
6. the response comes back from the geocoder to the second request

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