允许选择国家并仅放大到国家级别

Question

我想使用谷歌地图，但只能在国家级别使用，即我想在单个窗口中显示整个世界地图，用户应该能够通过点击国家来选择任何国家，我也应该能够显示一些弹出窗口.我也想从JS中选择国家的价值。请指导我。我对此进行了谷歌搜索，但没有完整的信息。

Answer 1

结合这两个例子：

1. Zoom to country
2. clickable world map

click to zoom to country

var map=null;
var geocoder = null;
var kmlLayer = null;
var infoWindow = new google.maps.InfoWindow(); // InfoWindow

function openIW(layerEvt) {
  if (layerEvt.row) {
    var content = layerEvt.row['admin'].value;
  } else if (layerEvt.featureData) {
    var content = layerEvt.featureData.name;
  }
  document.getElementById('info').innerHTML = "you clicked on:<br>"+content;
  findAddress(content);
}

function initialize() {
  geocoder = new google.maps.Geocoder();
  var chicago = new google.maps.LatLng(36.4278,-15.9);
  var myOptions = {
    zoom: 2,
    center: chicago,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }

  map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);

  google.maps.event.addListener(map, "click", function() {
    document.getElementById('info').innerHTML = "";
  });


  kmlLayer = new google.maps.KmlLayer('http://www.geocodezip.com/geoxml3_test/world_countries_kml.xml', {preserveViewport: true, suppressInfoWindows: true} );
  kmlLayer.setMap(map);

  google.maps.event.addListener(kmlLayer, 'click', openIW);

}    

function findAddress(address) {
  if ((address != '') && geocoder) {
    geocoder.geocode( { 'address': address}, function(results, status) {
      if (status == google.maps.GeocoderStatus.OK) {
         if (results && results[0] && results[0].geometry && results[0].geometry.viewport) 
           map.fitBounds(results[0].geometry.viewport);
         } else {
           alert("No results found");
         }
      } else {
        alert("Geocode was not successful for the following reason: " + status);
      }
    });
  }
}