以上で完了です。

開発を始めるには、デベロッパー ドキュメント をご覧下さい。

Google Maps JavaScript API をアクティベートする

まず初めに Google Developers Console で次の作業を行います。

  1. プロジェクトを作成または選択する
  2. Google Maps JavaScript API と関連サービスをアクティベートする
  3. 適切なキーを作成する
続ける

PlaceID Finder

Read the documentation or view this example full screen.

// This sample uses the Place Autocomplete widget to allow the user to search
// for and select a place. The sample then displays an info window containing
// the place ID and other information about the place that the user has
// selected.

// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: -33.8688, lng: 151.2195},
    zoom: 13
  });

  var input = document.getElementById('pac-input');

  var autocomplete = new google.maps.places.Autocomplete(input);
  autocomplete.bindTo('bounds', map);

  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

  var infowindow = new google.maps.InfoWindow();
  var marker = new google.maps.Marker({
    map: map
  });
  marker.addListener('click', function() {
    infowindow.open(map, marker);
  });

  autocomplete.addListener('place_changed', function() {
    infowindow.close();
    var place = autocomplete.getPlace();
    if (!place.geometry) {
      return;
    }

    if (place.geometry.viewport) {
      map.fitBounds(place.geometry.viewport);
    } else {
      map.setCenter(place.geometry.location);
      map.setZoom(17);
    }

    // Set the position of the marker using the place ID and location.
    marker.setPlace({
      placeId: place.place_id,
      location: place.geometry.location
    });
    marker.setVisible(true);

    document.getElementById('place-name').textContent = place.name;
    document.getElementById('place-id').textContent = place.place_id;
    document.getElementById('place-address').textContent =
        place.formatted_address;
    infowindow.setContent(document.getElementById('infowindow-content'));
    infowindow.open(map, marker);
  });
}
<input id="pac-input" class="controls" type="text"
    placeholder="Enter a location">
<div id="map"></div>
<div id="infowindow-content">
  <span id="place-name"  class="title"></span><br>
  Place ID <span id="place-id"></span><br>
  <span id="place-address"></span>
</div>
/* Always set the map height explicitly to define the size of the div
 * element that contains the map. */
#map {
  height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
  height: 100%;
  margin: 0;
  padding: 0;
}
.controls {
  background-color: #fff;
  border-radius: 2px;
  border: 1px solid transparent;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
  box-sizing: border-box;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  height: 29px;
  margin-left: 17px;
  margin-top: 10px;
  outline: none;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 400px;
}

.controls:focus {
  border-color: #4d90fe;
}
.title {
  font-weight: bold;
}
#infowindow-content {
  display: none;
}
#map #infowindow-content {
  display: inline;
}
<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&libraries=places&callback=initMap"
        async defer></script>

実際に試す

コードブロックの右上にカーソルを合わせて、コードをコピーするか、コードを JSFiddl で開きます。

<!DOCTYPE html>
<html>
  <head>
    <title>Place ID Finder</title>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <style>
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }
      /* Optional: Makes the sample page fill the window. */
      html, body {
        height: 100%;
        margin: 0;
        padding: 0;
      }
      .controls {
        background-color: #fff;
        border-radius: 2px;
        border: 1px solid transparent;
        box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
        box-sizing: border-box;
        font-family: Roboto;
        font-size: 15px;
        font-weight: 300;
        height: 29px;
        margin-left: 17px;
        margin-top: 10px;
        outline: none;
        padding: 0 11px 0 13px;
        text-overflow: ellipsis;
        width: 400px;
      }

      .controls:focus {
        border-color: #4d90fe;
      }
      .title {
        font-weight: bold;
      }
      #infowindow-content {
        display: none;
      }
      #map #infowindow-content {
        display: inline;
      }

    </style>
  </head>
  <body>
    <input id="pac-input" class="controls" type="text"
        placeholder="Enter a location">
    <div id="map"></div>
    <div id="infowindow-content">
      <span id="place-name"  class="title"></span><br>
      Place ID <span id="place-id"></span><br>
      <span id="place-address"></span>
    </div>

    <script>
      // This sample uses the Place Autocomplete widget to allow the user to search
      // for and select a place. The sample then displays an info window containing
      // the place ID and other information about the place that the user has
      // selected.

      // This example requires the Places library. Include the libraries=places
      // parameter when you first load the API. For example:
      // <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">

      function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          center: {lat: -33.8688, lng: 151.2195},
          zoom: 13
        });

        var input = document.getElementById('pac-input');

        var autocomplete = new google.maps.places.Autocomplete(input);
        autocomplete.bindTo('bounds', map);

        map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

        var infowindow = new google.maps.InfoWindow();
        var marker = new google.maps.Marker({
          map: map
        });
        marker.addListener('click', function() {
          infowindow.open(map, marker);
        });

        autocomplete.addListener('place_changed', function() {
          infowindow.close();
          var place = autocomplete.getPlace();
          if (!place.geometry) {
            return;
          }

          if (place.geometry.viewport) {
            map.fitBounds(place.geometry.viewport);
          } else {
            map.setCenter(place.geometry.location);
            map.setZoom(17);
          }

          // Set the position of the marker using the place ID and location.
          marker.setPlace({
            placeId: place.place_id,
            location: place.geometry.location
          });
          marker.setVisible(true);

          document.getElementById('place-name').textContent = place.name;
          document.getElementById('place-id').textContent = place.place_id;
          document.getElementById('place-address').textContent =
              place.formatted_address;
          infowindow.setContent(document.getElementById('infowindow-content'));
          infowindow.open(map, marker);
        });
      }
    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places&callback=initMap"
        async defer></script>
  </body>
</html>

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Google Maps JavaScript API
Google Maps JavaScript API
ご不明な点がありましたら、Google のサポートページをご覧ください。