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

Remove an overlay

Read the documentation or view this example full screen.

// This example adds a UI control allowing users to remove the
// ground overlay from the map.

var historicalOverlay;
var map;

function initMap() {
  map = new google.maps.Map(document.getElementById('map'), {
    zoom: 13,
    center: {lat: 40.740, lng: -74.18}
  });

  var imageBounds = {
    north: 40.773941,
    south: 40.712216,
    east: -74.12544,
    west: -74.22655
  };

  historicalOverlay = new google.maps.GroundOverlay(
      'https://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg',
      imageBounds);

  addOverlay();
}

function addOverlay() {
  historicalOverlay.setMap(map);
}

function removeOverlay() {
  historicalOverlay.setMap(null);
}
<div id="floating-panel">
  <input onclick="removeOverlay();" type=button value="Remove overlay">
  <input onclick="addOverlay();" type=button value="Restore overlay">
</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;
}
<!-- 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
// This example adds a UI control allowing users to remove the
// ground overlay from the map.

var historicalOverlay;
var map;

function initMap() {
  map = new google.maps.Map(document.getElementById('map'), {
    zoom: 13,
    center: {lat: 40.740, lng: -74.18}
  });

  var imageBounds = {
    north: 40.773941,
    south: 40.712216,
    east: -74.12544,
    west: -74.22655
  };

  historicalOverlay = new google.maps.GroundOverlay(
      'https://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg',
      imageBounds);

  addOverlay();
}

function addOverlay() {
  historicalOverlay.setMap(map);
}

function removeOverlay() {
  historicalOverlay.setMap(null);
}
JavaScript + HTML
<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no">
    <meta charset="utf-8">
    <title>Remove an overlay</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;
      }
    </style>
  </head>
  <body>
    <div id="floating-panel">
      <input onclick="removeOverlay();" type=button value="Remove overlay">
      <input onclick="addOverlay();" type=button value="Restore overlay">
    </div>
    <div id="map"></div>
    <script>
      // This example adds a UI control allowing users to remove the
      // ground overlay from the map.

      var historicalOverlay;
      var map;

      function initMap() {
        map = new google.maps.Map(document.getElementById('map'), {
          zoom: 13,
          center: {lat: 40.740, lng: -74.18}
        });

        var imageBounds = {
          north: 40.773941,
          south: 40.712216,
          east: -74.12544,
          west: -74.22655
        };

        historicalOverlay = new google.maps.GroundOverlay(
            'https://www.lib.utexas.edu/maps/historical/newark_nj_1922.jpg',
            imageBounds);

        addOverlay();
      }

      function addOverlay() {
        historicalOverlay.setMap(map);
      }

      function removeOverlay() {
        historicalOverlay.setMap(null);
      }
    </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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