You're all set!

To start developing, please head over to our developer documentation.

Activate the Google Maps JavaScript API

To get you started we'll guide you through the Google Developers Console to do a few things first:

  1. Create or choose a project
  2. Activate the Google Maps JavaScript API and related services
  3. Create appropriate keys
Continue

Reverse Geocoding by Place ID

Read the documentation or view this example full screen.

// Initialize the map.
function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 8,
    center: {lat: 40.72, lng: -73.96}
  });
  var geocoder = new google.maps.Geocoder;
  var infowindow = new google.maps.InfoWindow;

  document.getElementById('submit').addEventListener('click', function() {
    geocodePlaceId(geocoder, map, infowindow);
  });
}

// This function is called when the user clicks the UI button requesting
// a reverse geocode.
function geocodePlaceId(geocoder, map, infowindow) {
  var placeId = document.getElementById('place-id').value;
  geocoder.geocode({'placeId': placeId}, function(results, status) {
    if (status === google.maps.GeocoderStatus.OK) {
      if (results[0]) {
        map.setZoom(11);
        map.setCenter(results[0].geometry.location);
        var marker = new google.maps.Marker({
          map: map,
          position: results[0].geometry.location
        });
        infowindow.setContent(results[0].formatted_address);
        infowindow.open(map, marker);
      } else {
        window.alert('No results found');
      }
    } else {
      window.alert('Geocoder failed due to: ' + status);
    }
  });
}
<div id="floating-panel">
  <!-- Supply a default place ID for a place in Brooklyn, New York. -->
  <input id="place-id" type="text" value="ChIJd8BlQ2BZwokRAFUEcm_qrcA">
  <input id="submit" type="button" value="Reverse Geocode by Place ID">
</div>
<div id="map"></div>
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
#map {
  height: 100%;
}
#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: 'Roboto','sans-serif';
  line-height: 30px;
  padding-left: 10px;
}
#floating-panel {
  width: 440px;
}
#place-id {
  width: 250px;
}
<!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap">
</script>
JavaScript
// Initialize the map.
function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 8,
    center: {lat: 40.72, lng: -73.96}
  });
  var geocoder = new google.maps.Geocoder;
  var infowindow = new google.maps.InfoWindow;

  document.getElementById('submit').addEventListener('click', function() {
    geocodePlaceId(geocoder, map, infowindow);
  });
}

// This function is called when the user clicks the UI button requesting
// a reverse geocode.
function geocodePlaceId(geocoder, map, infowindow) {
  var placeId = document.getElementById('place-id').value;
  geocoder.geocode({'placeId': placeId}, function(results, status) {
    if (status === google.maps.GeocoderStatus.OK) {
      if (results[0]) {
        map.setZoom(11);
        map.setCenter(results[0].geometry.location);
        var marker = new google.maps.Marker({
          map: map,
          position: results[0].geometry.location
        });
        infowindow.setContent(results[0].formatted_address);
        infowindow.open(map, marker);
      } else {
        window.alert('No results found');
      }
    } else {
      window.alert('Geocoder failed due to: ' + status);
    }
  });
}
JavaScript + HTML
<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Reverse Geocoding by Place ID</title>
    <style>
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      #map {
        height: 100%;
      }
      #floating-panel {
        position: absolute;
        top: 10px;
        left: 25%;
        z-index: 5;
        background-color: #fff;
        padding: 5px;
        border: 1px solid #999;
        text-align: center;
        font-family: 'Roboto','sans-serif';
        line-height: 30px;
        padding-left: 10px;
      }
      #floating-panel {
        width: 440px;
      }
      #place-id {
        width: 250px;
      }
    </style>
  </head>
  <body>
    <div id="floating-panel">
      <!-- Supply a default place ID for a place in Brooklyn, New York. -->
      <input id="place-id" type="text" value="ChIJd8BlQ2BZwokRAFUEcm_qrcA">
      <input id="submit" type="button" value="Reverse Geocode by Place ID">
    </div>
    <div id="map"></div>
    <script>
      // Initialize the map.
      function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 8,
          center: {lat: 40.72, lng: -73.96}
        });
        var geocoder = new google.maps.Geocoder;
        var infowindow = new google.maps.InfoWindow;

        document.getElementById('submit').addEventListener('click', function() {
          geocodePlaceId(geocoder, map, infowindow);
        });
      }

      // This function is called when the user clicks the UI button requesting
      // a reverse geocode.
      function geocodePlaceId(geocoder, map, infowindow) {
        var placeId = document.getElementById('place-id').value;
        geocoder.geocode({'placeId': placeId}, function(results, status) {
          if (status === google.maps.GeocoderStatus.OK) {
            if (results[0]) {
              map.setZoom(11);
              map.setCenter(results[0].geometry.location);
              var marker = new google.maps.Marker({
                map: map,
                position: results[0].geometry.location
              });
              infowindow.setContent(results[0].formatted_address);
              infowindow.open(map, marker);
            } else {
              window.alert('No results found');
            }
          } else {
            window.alert('Geocoder failed due to: ' + status);
          }
        });
      }
    </script>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
    </script>
  </body>
</html>

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