javascript - 如何使 infowindow 和 setzoom 都适用于 Google map API v3

Question

首先我应该说我不太了解 javascript 或 Google API V3。无论如何，我一直在尝试包含一个带有标记的谷歌地图，以指示我使用信息窗口访问过的地方。我在互联网上找到了一个示例，并将其复制到我的页面。然后我尝试添加一个功能以在单击标记时放大到该位置。更改代码后，我设法使缩放工作得非常好。但是，信息窗口不会打开。在我使用它时打开它之前；

infowindow.setContent(contentString); 
infowindow.open(map,marker);. 

但是缩放不能正常工作。改成这样后；

infowindow.setContent(this.html);
infowindow.open(map, this);

缩放效果很好。但是我丢失了信息窗口。任何人都可以看到我如何更改代码以使缩放和信息窗口都能正常工作。如果有人可以帮助我，我会很高兴。我可以使用下面的代码进行调整，还是需要完全重写？提前致谢

<script>
//<![CDATA[
// this variable will collect the html which will eventually be placed in the    side_bar 
var side_bar_html = "";

// arrays to hold copies of the markers and html used by the side_bar 
// because the function closure trick doesnt work there 
var gmarkers = [];
var map = null;

function initialize() {
    // create the map
    var myOptions = {
        zoom: 7,
        center: new google.maps.LatLng(47.516231, 13.550072),
        mapTypeControl: true,
        mapTypeControlOptions: {
            style: google.maps.MapTypeControlStyle.HORIZONTAL_BAR
        },
        navigationControl: true,
        mapTypeId: google.maps.MapTypeId.TERRAIN
    }
    map = new google.maps.Map(document.getElementById("map_canvas"),
    myOptions);

    google.maps.event.addListener(map, 'click', function () {
        infowindow.close();
    });

    // Add markers to the map
    // add the points 

    var point = new google.maps.LatLng(48.208174, 16.373819);
    var marker = createMarker(point, "Vienna", '<div style="font-size:12px;font-weight:   bold;font-family:segoe ui, Trebuchet MS;">Vienna</div>')

    // put the assembled side_bar_html contents into the side_bar div
    document.getElementById("side_bar").innerHTML = side_bar_html;
}

var infowindow = new google.maps.InfoWindow({
    size: new google.maps.Size(150, 100)
});

// This function picks up the click and opens the corresponding info window
function myclick(i) {
    google.maps.event.trigger(gmarkers[i], "click");
}

// A function to create the marker and set up the event window function 
function createMarker(latlng, name, html) {
    var contentString = html;
    var marker = new google.maps.Marker({
        position: latlng,
        map: map,
        zIndex: Math.round(latlng.lat() * -100000) << 5
    });

    google.maps.event.addListener(marker, 'click', function () {
        infowindow.setContent(this.html);
        infowindow.open(map, this);
        map.setZoom(10);
        map.setCenter(marker.getPosition());
    });

    // save the info we need to use later for the side_bar
    gmarkers.push(marker);
    // add a line to the side_bar html
    side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length - 1) + ')">' + name + '<\/a><br>';
}
</script>

Answer 1

主要问题是您更改了代码以使用标记的 .html 属性(google.maps.Marker 对象没有 .html 属性，但您可以添加它们)。

修复它的 2 个选项:

• 使用您的原始代码:

  // A function to create the marker and set up the event window function 
  function createMarker(latlng, name, html) {
      var contentString = html;
      var marker = new google.maps.Marker({
          position: latlng,
          map: map,
          zIndex: Math.round(latlng.lat() * -100000) << 5
      });
  
      google.maps.event.addListener(marker, 'click', function () {
          infowindow.setContent(contentString); 
          infowindow.open(map,marker);
          map.setZoom(10);
          map.setCenter(marker.getPosition());
     });
  
     // save the info we need to use later for the side_bar
     gmarkers.push(marker);
     // add a line to the side_bar html
     side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length - 1) + ')">' + name + '<\/a><br>';
  }
  

working example

• 将 .html 添加到 google.maps.Marker 并使用 this:

  // A function to create the marker and set up the event window function 
  function createMarker(latlng, name, html) {
      var marker = new google.maps.Marker({
          position: latlng,
          map: map,
          html: html,  // <---------------------------------------------- add this to the Marker
          zIndex: Math.round(latlng.lat() * -100000) << 5
      });
  
      google.maps.event.addListener(marker, 'click', function () {
          infowindow.setContent(this.html); 
          infowindow.open(map,this);
          map.setZoom(10);
          map.setCenter(this.getPosition());
     });
  
     // save the info we need to use later for the side_bar
     gmarkers.push(marker);
     // add a line to the side_bar html
     side_bar_html += '<a href="javascript:myclick(' + (gmarkers.length - 1) + ')">' + name + '<\/a><br>';
  }