javascript - Google map API InfoWindows

Question

我有一个带有多个标记的 Google map 。我试图在我的信息窗口中显示每个标记的信息:

function initializeMaps() {
      var latlng = new google.maps.LatLng(59.4920, 37.3010);
      var myOptions = {
          zoom: 6,
          center: latlng,
          disableDefaultUI: false,
          scrollwheel: false,
          mapTypeId: google.maps.MapTypeId.ROADMAP,
      };
      var infoWindow = new google.maps.InfoWindow();
      var latlngbounds = new google.maps.LatLngBounds();
      var map = new google.maps.Map(document.getElementById('map'),myOptions);

      var mc = new MarkerClusterer(map);
      var marker, i;
        for (i = 0; i < data.markers.length; i++) { 
              var image = "/images/markers/green-marker.png";
              marker = new google.maps.Marker({
              position: new google.maps.LatLng(data.markers[i].lat, data.markers[i].lng),
              map: map,
              title: data.markers[i].name,
              icon: image,
            });
            /*jshint loopfunc: true */
            (function (marker, data) {
            google.maps.event.addListener(marker, "click", function (e) {

                for (i=0; i<data.markers.length; i++) {
                    infoWindow.setContent("<div style = 'min-width:200px;min-height:40px'>" + '<img src="' + data.markers[i].link + '" style="height:150px;width:250px;" />' + "<br />" + data.markers[i].description + "<br />" + "<button>Read More</button>" + "</div>");
                    infoWindow.open(map, marker);
                }

            });
        })(marker, data);
        latlngbounds.extend(marker.position);

            mc.addMarker(marker);
        }
        var bounds = new google.maps.LatLngBounds();
    }

但它只向我显示 map 上每个标记信息窗口上数组的最后一个元素信息。下面是我的 JSON 文件:

var data = {
"markers":[
    {
        "city": "City Sample Text",
        "name": "Name Sample Text",
        "shortname": "redsquare_location",
        "description": "Descr Sample Text",
        "lat": "51.4910",
        "lng": "31.2985",
        "link": "images/infowindows/rs_rp.png",
    },
    {
        "city": "City Sample Text",
        "name": "Name Sample Text",
        "shortname": "pchurch_location",
        "description": "Descr Sample Text",
        "lat": "51.4925",
        "lng": "31.3007",
        "link": "images/infowindows/pc_rp.png",
    },
    {
        "city": "City Sample Text",
        "name": "Name Sample Text",
        "shortname": "muschool_location",
        "description": "Decr Sample Text",
        "lat": "51.4932",
        "lng": "31.3054",
        "link": "images/infowindows/ms_rp.png",
    }       
]
}

我的错误是什么？

Answer 1

因此你只能看到最后一个元素信息

var marker, i;
for (i = 0; i < data.markers.length; i++) { 
      var image = "/images/markers/green-marker.png";
      marker = new google.maps.Marker({
          position: new google.maps.LatLng(data.markers[i].lat, data.markers[i].lng),
          map: map,
          title: data.markers[i].name,
          icon: image,
      });

      google.maps.event.addListener(marker, "click", function (e) {
          ...
      });
}

您正在尝试在“for”循环内设置事件监听器。所以，你的情况与 Javascript multiple dynamic addEventListener created in for loop - passing parameters not working 非常相似。

如果您使用如下代码，此代码将起作用:

data.markers.forEach(function(marker){
    var image = "/images/markers/green-marker.png";
    var mapMarker = new google.maps.Marker({
          position: new google.maps.LatLng(marker.lat, marker.lng),
          map: map,
          title: marker.name,
          icon: image,
    });
    google.maps.event.addListener(marker, "click", function(e) {
      ...
    });
    mc.addMaker(mapMarker);
})