javascript - Google Maps对字符串进行地理编码

我已经在以下位置完成了地理编码示例:

https://developers.google.com/maps/documentation/javascript/examples/geocoding-simple

我希望能够对代码中的字符串进行地理编码并将标记放置在该位置，而不是用户搜索位置。

到目前为止，我的代码是:

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Geocoding service</title>
    <style>
      html, body, #map-canvas
      {
        height: 100%;
        margin: 0px;
        padding: 0px
      }
    </style>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
    <script>
   //global variables
var geocoder;
var map;
var Ireland = "Dublin";

function initialize()
{
  geocoder = new google.maps.Geocoder();
  var latlng = new google.maps.LatLng(53.3496, -6.3263);
  var mapOptions =
  {
    zoom: 8,
    center: latlng
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  codeAddress();//call the function
}

function codeAddress()
{
  var address = document.getElementById("Ireland").value;
  geocoder.geocode( {"Ireland":address}, function(results, status)
  {
    if (status == google.maps.GeocoderStatus.OK)
    {
      map.setCenter(results[0].geometry.location);//center the map over the result
      //place a marker at the 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="map-canvas"></div>
  </body>
</html>

最佳答案

这将更改codeAddress函数以接受参数并对该参数进行地址解析。如果您将Ireland变量作为参数传递，它将对“Dublin”进行地理编码。

var Ireland = "Dublin";

function initialize()
{
  geocoder = new google.maps.Geocoder();
  var latlng = new google.maps.LatLng(53.3496, -6.3263);
  var mapOptions =
  {
    zoom: 8,
    center: latlng
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  codeAddress(Ireland);//call the function
}

function codeAddress(address)
{
  geocoder.geocode( {address:address}, function(results, status)
  {
    if (status == google.maps.GeocoderStatus.OK)
    {
      map.setCenter(results[0].geometry.location);//center the map over the result
      //place a marker at the 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);
   }
  });
}

javascript - Google Maps对字符串进行地理编码-LMLPHP

代码段:

var Ireland = "Dublin";

function initialize() {
  geocoder = new google.maps.Geocoder();
  var latlng = new google.maps.LatLng(53.3496, -6.3263);
  var mapOptions = {
    zoom: 8,
    center: latlng
  }
  map = new google.maps.Map(document.getElementById('map-canvas'), mapOptions);
  codeAddress(Ireland); //call the function
}

function codeAddress(address) {
  geocoder.geocode({
    address: address
  }, function(results, status) {
    if (status == google.maps.GeocoderStatus.OK) {
      map.setCenter(results[0].geometry.location); //center the map over the result
      //place a marker at the 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);
    }
  });
}

html,
body,
#map-canvas {
  height: 100%;
  width: 100%;
  padding: 0;
  margin: 0;
}

<div id="map-canvas"></div>
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initialize" async defer></script>

关于javascript - Google Maps对字符串进行地理编码，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/21411358/