将您的 Maps JavaScript API 应用从 V2 升级到 V3

geoXml = new GGeoXml(
  'https://googlearchive.github.io/js-v2-samples/ggeoxml/cta.kml');

map.addOverlay(geoXml);

var layer = new google.maps.KmlLayer(
  'https://googlearchive.github.io/js-v2-samples/ggeoxml/cta.kml', {
    preserveViewport: true
});
layer.setMap(map);

var map = new GMap2(document.getElementById('map'));
map.setCenter(new GLatLng(34.0492459, -118.241043), 13);
map.setUIToDefault();

var trafficOptions = {incidents:false};
trafficInfo = new GTrafficOverlay(trafficOptions);
map.addOverlay(trafficInfo);

var map = new google.maps.Map(
    document.getElementById('map'), {
  center: new google.maps.LatLng(34.0492459, -118.241043),
  mapTypeId: google.maps.MapTypeId.ROADMAP,
  zoom: 13
});

var trafficLayer = new google.maps.TrafficLayer();
trafficLayer.setMap(map);

var geocoder = new GClientGeocoder();
var infoPanel;
var map;
var AccuracyDescription = [
  'Unknown accuracy', 'country level accuracy',
  'region level accuracy', 'sub-region level accuracy',
  'town level accuracy', 'post code level accuracy',
  'street level accuracy', 'intersection level accuracy',
  'address level accuracy', 'premise level accuracy',
];

function geocode_result_handler(response) {
  if (!response || response.Status.code != 200) {
    alert('Geocoding failed. ' + response.Status.code);
  } else {
    var bounds = new GLatLngBounds(new GLatLng(
        response.Placemark[0].ExtendedData.LatLonBox.south,
        response.Placemark[0].ExtendedData.LatLonBox.west
    ), new GLatLng(
        response.Placemark[0].ExtendedData.LatLonBox.north,
        response.Placemark[0].ExtendedData.LatLonBox.east
    ));
    map.setCenter(bounds.getCenter(),
        map.getBoundsZoomLevel(bounds));
    var latlng = new GLatLng(
        response.Placemark[0].Point.coordinates[1],
        response.Placemark[0].Point.coordinates[0]);
    infoPanel.innerHTML += '<p>1st result is <em>' +
        // No info about location type
        response.Placemark[0].address +
        '</em> of <em>' +
        AccuracyDescription[response.Placemark[0].
            AddressDetails.Accuracy] +
        '</em> at <tt>' + latlng + '</tt></p>';
    var marker_title = response.Placemark[0].address +
        ' at ' + latlng;
    map.clearOverlays();

    var marker = marker = new GMarker(
        latlng,
        {'title': marker_title}
    );
    map.addOverlay(marker);
  }
}

function geocode_address() {
  var address = document.getElementById('input-text').value;
  infoPanel.innerHTML = '<p>Original address: ' + address + '</p>';
  geocoder.getLocations(address, geocode_result_handler);
}

function initialize() {
  map = new GMap2(document.getElementById('map'));
  map.setCenter(new GLatLng(38, 15), 2);
  map.setUIToDefault();

  infoPanel = document.getElementById('info-panel');
}

var geocoder = new google.maps.Geocoder();
var infoPanel;
var map;
var marker;

function geocode_result_handler(result, status) {
  if (status != google.maps.GeocoderStatus.OK) {
    alert('Geocoding failed. ' + status);
  } else {
    map.fitBounds(result[0].geometry.viewport);
    infoPanel.innerHTML += '<p>1st result for geocoding is <em>' +
        result[0].geometry.location_type.toLowerCase() +
        '</em> to <em>' +
        result[0].formatted_address + '</em> of types <em>' +
        result[0].types.join('</em>, <em>').replace(/_/, ' ') +
        '</em> at <tt>' + result[0].geometry.location +
        '</tt></p>';
    var marker_title = result[0].formatted_address +
        ' at ' + latlng;
    if (marker) {
      marker.setPosition(result[0].geometry.location);
      marker.setTitle(marker_title);
    } else {
      marker = new google.maps.Marker({
        position: result[0].geometry.location,
        title: marker_title,
        map: map
      });
    }
  }
}

function geocode_address() {
  var address = document.getElementById('input-text').value;
  infoPanel.innerHTML = '<p>Original address: ' + address + '</p>';
  geocoder.geocode({'address': address}, geocode_result_handler);
}

function initialize() {
  map = new google.maps.Map(document.getElementById('map'), {
    center: new google.maps.LatLng(38, 15),
    zoom: 2,
    mapTypeId: google.maps.MapTypeId.HYBRID
  });
  infoPanel = document.getElementById('info-panel');
}

var map;
var directions;
var directionsPanel;

function initialize() {
  var origin = new google.maps.LatLng(53.348172, -6.297285);
  var destination = new google.maps.LatLng(53.355502, -6.30557);
  directionsPanel = document.getElementById("route");

  map = new GMap2(document.getElementById('map'));
  map.setCenter(origin, 10);
  map.setUIToDefault();

  directions = new GDirections(map, directionsPanel);

  directions.loadFromWaypoints(
      [origin, destination], {
        travelMode: 'G_TRAVEL_MODE_WALKING',
  });
}

var map;
var directionsRenderer;
var directionsService = new google.maps.DirectionsService();

function initialize() {
  var origin = new google.maps.LatLng(53.348172, -6.297285);
  var destination = new google.maps.LatLng(53.355502, -6.30557);
  directionsRenderer = new google.maps.DirectionsRenderer();

  map = new google.maps.Map(
      document.getElementById('map'), {
        center: origin,
        zoom: 10,
        mapTypeId: google.maps.MapTypeId.ROADMAP
  });

  directionsRenderer.setPanel(document.getElementById("route"));
  directionsRenderer.setMap(map);
  directionsService.route({
    origin: origin,
    destination: destination,
    travelMode: google.maps.DirectionsTravelMode.WALKING
  }, function(result, status) {
    if (status == google.maps.DirectionsStatus.OK) {
      directionsRenderer.setDirections(result);
    }
  });
}

function initialize() {
  var fenwayPark = new GLatLng(42.345573, -71.098326);
  panoramaOptions = {
    latlng: fenwayPark,
    pov: {
      heading: 35,
      pitch: 5,
      zoom: 1
    }
  };

  var panorama = new GStreetviewPanorama(
      document.getElementById('pano'),
      panoramaOptions);

  GEvent.addListener(myPano, "error", handleNoFlash);
}

function handleNoFlash(errorCode) {
  if (errorCode == FLASH_UNAVAILABLE) {
    alert('Error: Your browser does not support Flash');
    return;
  }
}

function initialize() {
  var fenway = new google.maps.LatLng(42.345573, -71.098326);
  var panoramaOptions = {
    position: fenway,
    pov: {
      heading: 35,
      pitch: 5,
      zoom: 1
    }
  };

  var panorama = new google.maps.StreetViewPanorama(
      document.getElementById('pano'),
      panoramaOptions);
}

var marker;
var panoClient = new GStreetviewClient();

function initialize() {
  if (GBrowserIsCompatible()) {
    var myPano = new GStreetviewPanorama(
        document.getElementById('pano'));
    GEvent.addListener(myPano, 'error', handleNoFlash);
    var map = new GMap2(document.getElementById('map'));
    map.setCenter(new GLatLng(42.345573, -71.098326), 16);
    map.setUIToDefault();

    GEvent.addListener(map, 'click', function(overlay, latlng) {
      if (marker) {
        marker.setLatLng(latlng);
      } else {
        marker = new GMarker(latlng);
        map.addOverlay(marker);
      }
      var nearestPano = panoClient.getNearestPanorama(
          latlng, processSVData);
    });

    function processSVData(panoData) {
      if (panoData.code != 200) {
        alert("Panorama data not found for this location.");
      }
      var latlng = marker.getLatLng();
      var dLat = latlng.latRadians()
          - panoData.location.latlng.latRadians();
      var dLon = latlng.lngRadians()
          - panoData.location.latlng.lngRadians();
      var y = Math.sin(dLon) * Math.cos(latlng.latRadians());
      var x = Math.cos(panoData.location.latlng.latRadians()) *
              Math.sin(latlng.latRadians()) -
              Math.sin(panoData.location.latlng.latRadians()) *
              Math.cos(latlng.latRadians()) * Math.cos(dLon);
      var bearing = Math.atan2(y, x) * 180 / Math.PI;

      myPano.setLocationAndPOV(panoData.location.latlng, {
        yaw: bearing
      });
    }

    function handleNoFlash(errorCode) {
      if (errorCode == FLASH_UNAVAILABLE) {
        alert('Error: Your browser does not support Flash');
        return;
      }
    }
  }
}

// Load the API with libraries=geometry
var map;
var marker;
var panorama;
var sv = new google.maps.StreetViewService();

function radians(degrees) { return Math.PI * degrees / 180.0 };

function initialize() {

  panorama = new google.maps.StreetViewPanorama(
      document.getElementById("pano"));

  map = new google.maps.Map(
      document.getElementById('map'), {
    center: new google.maps.LatLng(42.345573, -71.098326),
    mapTypeId: google.maps.MapTypeId.ROADMAP,
    zoom: 16
  });

  google.maps.event.addListener(map, 'click', function(event) {
    if (!marker) {
      marker = new google.maps.Marker({
          position: event.latLng,
          map: map
      });
    } else {
      marker.setPosition(event.latLng);
    }
    sv.getPanoramaByLocation(event.latLng, 50, processSVData);
  });
}

function processSVData(panoData, status) {
  if (status == google.maps.StreetViewStatus.OK) {
    alert("Panorama data not found for this location.");
  }
  var bearing = google.maps.geometry.spherical.computeHeading(
      panoData.location.latLng, marker.getPosition());

  panorama.setPano(panoData.location.pano);

  panorama.setPov({
    heading: bearing,
    pitch: 0,
    zoom: 1
  });

  panorama.setVisible(true);
  marker.setMap(panorama);
}