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

Complex icons

Read the documentation or view this example full screen.

// The following example creates complex markers to indicate beaches near
// Sydney, NSW, Australia. Note that the anchor is set to (0,32) to correspond
// to the base of the flagpole.

function initMap() {
  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 10,
    center: {lat: -33.9, lng: 151.2}
  });

  setMarkers(map);
}

// Data for the markers consisting of a name, a LatLng and a zIndex for the
// order in which these markers should display on top of each other.
var beaches = [
  ['Bondi Beach', -33.890542, 151.274856, 4],
  ['Coogee Beach', -33.923036, 151.259052, 5],
  ['Cronulla Beach', -34.028249, 151.157507, 3],
  ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
  ['Maroubra Beach', -33.950198, 151.259302, 1]
];

function setMarkers(map) {
  // Adds markers to the map.

  // Marker sizes are expressed as a Size of X,Y where the origin of the image
  // (0,0) is located in the top left of the image.

  // Origins, anchor positions and coordinates of the marker increase in the X
  // direction to the right and in the Y direction down.
  var image = {
    url: 'https://developers.google.com/maps/documentation/javascript/examples/full/images/beachflag.png',
    // This marker is 20 pixels wide by 32 pixels high.
    size: new google.maps.Size(20, 32),
    // The origin for this image is (0, 0).
    origin: new google.maps.Point(0, 0),
    // The anchor for this image is the base of the flagpole at (0, 32).
    anchor: new google.maps.Point(0, 32)
  };
  // Shapes define the clickable region of the icon. The type defines an HTML
  // <area> element 'poly' which traces out a polygon as a series of X,Y points.
  // The final coordinate closes the poly by connecting to the first coordinate.
  var shape = {
    coords: [1, 1, 1, 20, 18, 20, 18, 1],
    type: 'poly'
  };
  for (var i = 0; i < beaches.length; i++) {
    var beach = beaches[i];
    var marker = new google.maps.Marker({
      position: {lat: beach[1], lng: beach[2]},
      map: map,
      icon: image,
      shape: shape,
      title: beach[0],
      zIndex: beach[3]
    });
  }
}
<div id="map"></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;
}
 <!-- 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>

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>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Complex icons</title>
    <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;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <script>

      // The following example creates complex markers to indicate beaches near
      // Sydney, NSW, Australia. Note that the anchor is set to (0,32) to correspond
      // to the base of the flagpole.

      function initMap() {
        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 10,
          center: {lat: -33.9, lng: 151.2}
        });

        setMarkers(map);
      }

      // Data for the markers consisting of a name, a LatLng and a zIndex for the
      // order in which these markers should display on top of each other.
      var beaches = [
        ['Bondi Beach', -33.890542, 151.274856, 4],
        ['Coogee Beach', -33.923036, 151.259052, 5],
        ['Cronulla Beach', -34.028249, 151.157507, 3],
        ['Manly Beach', -33.80010128657071, 151.28747820854187, 2],
        ['Maroubra Beach', -33.950198, 151.259302, 1]
      ];

      function setMarkers(map) {
        // Adds markers to the map.

        // Marker sizes are expressed as a Size of X,Y where the origin of the image
        // (0,0) is located in the top left of the image.

        // Origins, anchor positions and coordinates of the marker increase in the X
        // direction to the right and in the Y direction down.
        var image = {
          url: 'https://developers.google.com/maps/documentation/javascript/examples/full/images/beachflag.png',
          // This marker is 20 pixels wide by 32 pixels high.
          size: new google.maps.Size(20, 32),
          // The origin for this image is (0, 0).
          origin: new google.maps.Point(0, 0),
          // The anchor for this image is the base of the flagpole at (0, 32).
          anchor: new google.maps.Point(0, 32)
        };
        // Shapes define the clickable region of the icon. The type defines an HTML
        // <area> element 'poly' which traces out a polygon as a series of X,Y points.
        // The final coordinate closes the poly by connecting to the first coordinate.
        var shape = {
          coords: [1, 1, 1, 20, 18, 20, 18, 1],
          type: 'poly'
        };
        for (var i = 0; i < beaches.length; i++) {
          var beach = beaches[i];
          var marker = new google.maps.Marker({
            position: {lat: beach[1], lng: beach[2]},
            map: map,
            icon: image,
            shape: shape,
            title: beach[0],
            zIndex: beach[3]
          });
        }
      }
    </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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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。