Listening to DOM events

by Matt Rummler

HTML

<div id="map"></div>
<button type="button" id="buttonToAffectMap">
Click me to cause something on the map.
</button>
<!-- 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>

CSS

/* 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;
}

JavaScript

function initMap() {
  var mapDiv = document.getElementById('map');
  var buttonTAM = document.getElementById('buttonToAffectMap');
  var map = new google.maps.Map(mapDiv, {
    zoom: 8,
    center: new google.maps.LatLng(-34.397, 150.644)
  });

  // We add a DOM event here to show an alert if the DIV containing the
  // map is clicked.
  google.maps.event.addDomListener(mapDiv, 'click', function() {
    window.alert('Map was clicked!');
  });
  google.maps.events.addDomListener(buttonTAM, 'click' function() {
  	alert(map.getBounds);
    console.log(map.getBounds);
  });
}