Read the documentation.
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 18,
center: {lat: 37.783, lng: -122.403}
});
var bounds = {
17: [[20969, 20970], [50657, 50658]],
18: [[41939, 41940], [101315, 101317]],
19: [[83878, 83881], [202631, 202634]],
20: [[167757, 167763], [405263, 405269]]
};
var imageMapType = new google.maps.ImageMapType({
getTileUrl: function(coord, zoom) {
if (zoom < 17 || zoom > 20 ||
bounds[zoom][0][0] > coord.x || coord.x > bounds[zoom][0][1] ||
bounds[zoom][1][0] > coord.y || coord.y > bounds[zoom][1][1]) {
return null;
}
return ['//www.gstatic.com/io2010maps/tiles/5/L2_',
zoom, '_', coord.x, '_', coord.y, '.png'].join('');
},
tileSize: new google.maps.Size(256, 256)
});
map.overlayMapTypes.push(imageMapType);
}
<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>
Try it yourself
You can experiment with this code in JSFiddle by clicking the <> icon in the
top-right corner of the code window.
<!DOCTYPE html>
<html>
<head>
<title>Overlaying an Image Map Type</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;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
function initMap() {
var map = new google.maps.Map(document.getElementById('map'), {
zoom: 18,
center: {lat: 37.783, lng: -122.403}
});
var bounds = {
17: [[20969, 20970], [50657, 50658]],
18: [[41939, 41940], [101315, 101317]],
19: [[83878, 83881], [202631, 202634]],
20: [[167757, 167763], [405263, 405269]]
};
var imageMapType = new google.maps.ImageMapType({
getTileUrl: function(coord, zoom) {
if (zoom < 17 || zoom > 20 ||
bounds[zoom][0][0] > coord.x || coord.x > bounds[zoom][0][1] ||
bounds[zoom][1][0] > coord.y || coord.y > bounds[zoom][1][1]) {
return null;
}
return ['//www.gstatic.com/io2010maps/tiles/5/L2_',
zoom, '_', coord.x, '_', coord.y, '.png'].join('');
},
tileSize: new google.maps.Size(256, 256)
});
map.overlayMapTypes.push(imageMapType);
}
</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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