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我正在尝试创建一个对谷歌地图进行地理编码的表单。我有来自地图 API 的基本代码,但它只适用于一个字段:“地址”。

我没有使用“getElementByID”,而是使用“getElementByClassName”,以便它可以使用我设置的任何字段中的数据。

也就是说,它不起作用。通过使用类而不是 ID,我是否朝着正确的方向前进?

下面是我正在使用的代码。API-KEY 省略。

     <!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
      html { height: 100% }
      body { height: 100%; margin: 0; padding: 0 }
      #map-canvas { height: 100% }
    </style>
    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js"></script>
    <script type="text/javascript"
      src="https://maps.googleapis.com/maps/api/js?key=mykey=false">
    </script>
    <script type="text/javascript">

var geocoder;
var map;
function initialize() {
  geocoder = new google.maps.Geocoder();
  var latlng = new google.maps.LatLng(39.861933, -83.067746);
  var mapOptions = {
    zoom: 3,
    center: latlng,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
}

function codeAddress() {
  var address = document.getElementById('address').value;
  address += " "+document.getElementById('street_add').value;
  address += " "+document.getElementById('city').value;
  address += " "+document.getElementById('state').value;
  address += " "+document.getElementById('postcode').value;
  address += " "+document.getElementById('country').value;
  geocoder.geocode( { 'address': address}, 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);
    }
  });
}

google.maps.event.addDomListener(window, 'load', initialize);


    </script>
  </head>
  <body>
    <div id="panel">
      <form action="" name="" method="post">
         <input id="address" type="hidden" value="">
         <input id="street_add" type="textbox" value="" class="address">
         <input id="city" type="textbox" value="" class="address">
         <input id="state" type="textbox" value="" class="address">
         <input id="postcode" type="textbox" value="" class="address">
         <input id="country" type="textbox" value="" class="address">
         <input type="button" value="Geocode" onclick="codeAddress()">
       </form>
    </div>
    <div id="map-canvas" style="height:40%;top:30px;"></div>
  </body>
</html>
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1 回答 1

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地理编码器采用表示地址的单个字符串。您当前没有创建它,您正在向它传递一个未定义的值(没有 getElementByClassName,它是getElementsByClassName并返回一个 HTML 元素数组)

将单独的值组合成一个字符串:

var address = document.getElementById('street_add').value;
address += " "+document.getElementById('city').value;
address += " "+document.getElementById('state').value;
address += " "+document.getElementById('postcode').value;
address += " "+document.getElementById('country').value;

工作示例

于 2013-08-10T16:44:21.000 回答