Google Maps API v3 - 单击标记时如何“提醒”标记ID [重复]答案

【问题标题】：Google Maps API v3 - How to "alert" marker ID when marker is clicked [duplicate]Google Maps API v3 - 单击标记时如何“提醒”标记ID [重复]
【发布时间】：2015-07-15 10:25:19
【问题描述】：

这个问题很简单。使用此问题答案中的代码： Google Maps JS API v3 - Simple Multiple Marker Example 当它被点击时，我如何添加一个带有标记 id 的 javascript 警报（即：如果它是第一个标记，则为 0，如果它是第二个，则为 1，依此类推）？

基本上我需要为标记添加侦听器，当单击标记时，提醒标记的 ID。不知道还要澄清多少，所以它不会被标记为重复。

感谢您提供的任何帮助。

这是答案的代码：

<!DOCTYPE html>
<html> 
<head> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> 
  <title>Google Maps Multiple Markers</title> 
  <script src="http://maps.google.com/maps/api/js?sensor=false" 
          type="text/javascript"></script>
</head> 
<body>
  <div id="map" style="width: 500px; height: 400px;"></div>

  <script type="text/javascript">
    var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 10,
      center: new google.maps.LatLng(-33.92, 151.25),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var infowindow = new google.maps.InfoWindow();

    var marker, i;

    for (i = 0; i < locations.length; i++) {  
      marker = new google.maps.Marker({
        position: new google.maps.LatLng(locations[i][1], locations[i][2]),
        map: map
      });

      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent(locations[i][0]);
          infowindow.open(map, marker);
        }
      })(marker, i));
    }
  </script>
</body>
</html>

【问题讨论】：

标签： javascript google-maps google-maps-api-3

【解决方案1】：

将id:i 添加到for (i = 0; i < locations.length; i++) 循环中。现在您可以在infowindow.setContent 中使用marker.id。

<!DOCTYPE html>
<html> 
<head> 
  <meta http-equiv="content-type" content="text/html; charset=UTF-8" /> 
  <title>Google Maps Multiple Markers</title> 
  <script src="http://maps.google.com/maps/api/js?sensor=false" 
          type="text/javascript"></script>
</head> 
<body>
  <div id="map" style="width: 500px; height: 400px;"></div>

  <script type="text/javascript">
    var locations = [
      ['Bondi Beach', -33.890542, 151.274856, 4],
      ['Coogee Beach', -33.923036, 151.259052, 5],
      ['Cronulla Beach', -34.028249, 151.157507, 3],
      ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
      ['Maroubra Beach', -33.950198, 151.259302, 1]
    ];

    var map = new google.maps.Map(document.getElementById('map'), {
      zoom: 10,
      center: new google.maps.LatLng(-33.92, 151.25),
      mapTypeId: google.maps.MapTypeId.ROADMAP
    });

    var infowindow = new google.maps.InfoWindow();

    var marker, i;

    for (i = 0; i < locations.length; i++) {  
      marker = new google.maps.Marker({
        id:i,
        position: new google.maps.LatLng(locations[i][1], locations[i][2]),
        map: map
      });

      google.maps.event.addListener(marker, 'click', (function(marker, i) {
        return function() {
          infowindow.setContent(locations[i][0]+" ID="+marker.id);
          infowindow.open(map, marker);
        }
      })(marker, i));
    }
  </script>
</body>
</html>

【讨论】：

正是我想要的。谢谢！
i 也是在函数闭包中维护的，所以你可以照原样使用fiddle