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Basic Map Types | Maps JavaScript API

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This example replaces the default map tiles with custom imagery that displays the map's tile coordinates on a series of gray tiles.

Read the documentation.

/*
 * This demo demonstrates how to replace default map tiles with custom imagery.
 * In this case, the CoordMapType displays gray tiles annotated with the tile
 * coordinates.
 *
 * Try panning and zooming the map to see how the coordinates change.
 */

class CoordMapType {
  tileSize: google.maps.Size;
  maxZoom = 19;
  name = "Tile #s";
  alt = "Tile Coordinate Map Type";

  constructor(tileSize: google.maps.Size) {
    this.tileSize = tileSize;
  }

  getTile(
    coord: google.maps.Point,
    zoom: number,
    ownerDocument: Document
  ): HTMLElement {
    const div = ownerDocument.createElement("div");

    div.innerHTML = String(coord);
    div.style.width = this.tileSize.width + "px";
    div.style.height = this.tileSize.height + "px";
    div.style.fontSize = "10";
    div.style.borderStyle = "solid";
    div.style.borderWidth = "1px";
    div.style.borderColor = "#AAAAAA";
    div.style.backgroundColor = "#E5E3DF";
    return div;
  }

  releaseTile(tile: HTMLElement): void {}
}

function initMap(): void {
  const map = new google.maps.Map(
    document.getElementById("map") as HTMLElement,
    {
      zoom: 10,
      center: { lat: 41.85, lng: -87.65 },
      streetViewControl: false,
      mapTypeId: "coordinate",
      mapTypeControlOptions: {
        mapTypeIds: ["coordinate", "roadmap"],
        style: google.maps.MapTypeControlStyle.DROPDOWN_MENU,
      },
    }
  );

  map.addListener("maptypeid_changed", () => {
    const showStreetViewControl =
      (map.getMapTypeId() as string) !== "coordinate";

    map.setOptions({
      streetViewControl: showStreetViewControl,
    });
  });

  // Now attach the coordinate map type to the map's registry.
  map.mapTypes.set(
    "coordinate",
    new CoordMapType(new google.maps.Size(256, 256))
  );
}

declare global {
  interface Window {
    initMap: () => void;
  }
}
window.initMap = initMap;

/*
 * This demo demonstrates how to replace default map tiles with custom imagery.
 * In this case, the CoordMapType displays gray tiles annotated with the tile
 * coordinates.
 *
 * Try panning and zooming the map to see how the coordinates change.
 */
class CoordMapType {
  tileSize;
  maxZoom = 19;
  name = "Tile #s";
  alt = "Tile Coordinate Map Type";
  constructor(tileSize) {
    this.tileSize = tileSize;
  }
  getTile(coord, zoom, ownerDocument) {
    const div = ownerDocument.createElement("div");

    div.innerHTML = String(coord);
    div.style.width = this.tileSize.width + "px";
    div.style.height = this.tileSize.height + "px";
    div.style.fontSize = "10";
    div.style.borderStyle = "solid";
    div.style.borderWidth = "1px";
    div.style.borderColor = "#AAAAAA";
    div.style.backgroundColor = "#E5E3DF";
    return div;
  }
  releaseTile(tile) {}
}

function initMap() {
  const map = new google.maps.Map(document.getElementById("map"), {
    zoom: 10,
    center: { lat: 41.85, lng: -87.65 },
    streetViewControl: false,
    mapTypeId: "coordinate",
    mapTypeControlOptions: {
      mapTypeIds: ["coordinate", "roadmap"],
      style: google.maps.MapTypeControlStyle.DROPDOWN_MENU,
    },
  });

  map.addListener("maptypeid_changed", () => {
    const showStreetViewControl = map.getMapTypeId() !== "coordinate";

    map.setOptions({
      streetViewControl: showStreetViewControl,
    });
  });
  // Now attach the coordinate map type to the map's registry.
  map.mapTypes.set(
    "coordinate",
    new CoordMapType(new google.maps.Size(256, 256)),
  );
}

window.initMap = initMap;

/* 
 * 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;
}

<html>
  <head>
    <title>Basic Map Types</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
  </head>
  <body>
    <div id="map"></div>

    <!-- 
      The `defer` attribute causes the script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises. See
      https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
      defer
    ></script>
  </body>
</html>

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application.

  git clone -b sample-maptype-base https://github.com/googlemaps/js-samples.git
  cd js-samples
  npm i
  npm start

Other samples can be tried by switching to any branch beginning with sample-SAMPLE_NAME.

  git checkout sample-SAMPLE_NAME
  npm i
  npm start

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