3

我是谷歌地图的新手,只是想掌握它。我希望能够输入一个城市或地址,然后让地图加载它并放置一个标记。

现在,我的地图最初加载良好,但是当我输入城市或地址时,什么也没有发生。知道这里发生了什么吗?

<script type="text/javascript">
var geocoder;
var map;
  function initialize() {
    geocoder = new google.maps.Geocoder();
    var latlang = new google.maps.LatLng(42, -84);
    var myOptions = {
        center: latlang, zoom: 5, mapTypeId: google.maps.MapTypeId.SATELLITE,
        navigationControlOptions: {
            style: google.maps.NavigationControlStyle.SMALL
        }
    };
    var map = new google.maps.Map(document.getElementById("map_canvas"),
        myOptions);
  }

  function codeAddress() { 
    var sAddress = document.getElementById("newLocation").value;
    geocoder.geocode( { 'address': sAddress}, 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("Geocode was not successful for the following reason: " + status);
            }
        });
  }
</script>
</head>
  <body onload="initialize()">
    Address: <input type="text" id="newLocation" style=" width:200px" title="Address to Geocode" />     
    <input type="button" onclick="codeAddress()" id="inputButtonGeocode" style="width:150px" title="Click to Geocode" value="Geocode" />
    <div id="map_canvas" style="width:100%; height:100%"></div>
  </body>
</html>
4

1 回答 1

4

在行

var map = new google.maps.Map(document.getElementById("map_canvas")...

删除这个词var。因为它map在功能本地范围内创建,并且地理编码功能只看到先前(空)map变量。通过删除它,全局map变量将更新为这个新的谷歌地图。

于 2012-05-21T02:44:48.897 回答