POI Click Events

This example demonstrates the use of click event listeners on POIs (points of interest). It listens for the click event on a POI icon and then uses the placeId from the event data with a directionsService.route request to calculate and display a route to the clicked place. It also uses the placeId to get more details of the place.

Read the documentation.

function initMap() {
  var origin = {lat: -33.871, lng: 151.197};

  var map = new google.maps.Map(document.getElementById('map'), {
    zoom: 18,
    center: origin
  });
  var clickHandler = new ClickEventHandler(map, origin);
}

/**
 * @constructor
 */
var ClickEventHandler = function(map, origin) {
  this.origin = origin;
  this.map = map;
  this.directionsService = new google.maps.DirectionsService;
  this.directionsDisplay = new google.maps.DirectionsRenderer;
  this.directionsDisplay.setMap(map);
  this.placesService = new google.maps.places.PlacesService(map);
  this.infowindow = new google.maps.InfoWindow;
  this.infowindowContent = document.getElementById('infowindow-content');
  this.infowindow.setContent(this.infowindowContent);

  // Listen for clicks on the map.
  this.map.addListener('click', this.handleClick.bind(this));
};

ClickEventHandler.prototype.handleClick = function(event) {
  console.log('You clicked on: ' + event.latLng);
  // If the event has a placeId, use it.
  if (event.placeId) {
    console.log('You clicked on place:' + event.placeId);

    // Calling e.stop() on the event prevents the default info window from
    // showing.
    // If you call stop here when there is no placeId you will prevent some
    // other map click event handlers from receiving the event.
    event.stop();
    this.calculateAndDisplayRoute(event.placeId);
    this.getPlaceInformation(event.placeId);
  }
};

ClickEventHandler.prototype.calculateAndDisplayRoute = function(placeId) {
  var me = this;
  this.directionsService.route({
    origin: this.origin,
    destination: {placeId: placeId},
    travelMode: 'WALKING'
  }, function(response, status) {
    if (status === 'OK') {
      me.directionsDisplay.setDirections(response);
    } else {
      window.alert('Directions request failed due to ' + status);
    }
  });
};

ClickEventHandler.prototype.getPlaceInformation = function(placeId) {
  var me = this;
  this.placesService.getDetails({placeId: placeId}, function(place, status) {
    if (status === 'OK') {
      me.infowindow.close();
      me.infowindow.setPosition(place.geometry.location);
      me.infowindowContent.children['place-icon'].src = place.icon;
      me.infowindowContent.children['place-name'].textContent = place.name;
      me.infowindowContent.children['place-id'].textContent = place.place_id;
      me.infowindowContent.children['place-address'].textContent =
          place.formatted_address;
      me.infowindow.open(me.map);
    }
  });
};

<div id="map"></div>
<div id="infowindow-content">
  <img id="place-icon" src="" height="16" width="16">
  <span id="place-name"  class="title"></span><br>
  Place ID <span id="place-id"></span><br>
  <span id="place-address"></span>
</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;
}
.title {
  font-weight: bold;
}
#infowindow-content {
  display: none;
}
#map #infowindow-content {
  display: inline;
}

<!-- 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&libraries=places&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>POI Click Events</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;
      }
      .title {
        font-weight: bold;
      }
      #infowindow-content {
        display: none;
      }
      #map #infowindow-content {
        display: inline;
      }
    </style>
  </head>
  <body>
    <div id="map"></div>
    <div id="infowindow-content">
      <img id="place-icon" src="" height="16" width="16">
      <span id="place-name"  class="title"></span><br>
      Place ID <span id="place-id"></span><br>
      <span id="place-address"></span>
    </div>
    <script>
      function initMap() {
        var origin = {lat: -33.871, lng: 151.197};

        var map = new google.maps.Map(document.getElementById('map'), {
          zoom: 18,
          center: origin
        });
        var clickHandler = new ClickEventHandler(map, origin);
      }

      /**
       * @constructor
       */
      var ClickEventHandler = function(map, origin) {
        this.origin = origin;
        this.map = map;
        this.directionsService = new google.maps.DirectionsService;
        this.directionsDisplay = new google.maps.DirectionsRenderer;
        this.directionsDisplay.setMap(map);
        this.placesService = new google.maps.places.PlacesService(map);
        this.infowindow = new google.maps.InfoWindow;
        this.infowindowContent = document.getElementById('infowindow-content');
        this.infowindow.setContent(this.infowindowContent);

        // Listen for clicks on the map.
        this.map.addListener('click', this.handleClick.bind(this));
      };

      ClickEventHandler.prototype.handleClick = function(event) {
        console.log('You clicked on: ' + event.latLng);
        // If the event has a placeId, use it.
        if (event.placeId) {
          console.log('You clicked on place:' + event.placeId);

          // Calling e.stop() on the event prevents the default info window from
          // showing.
          // If you call stop here when there is no placeId you will prevent some
          // other map click event handlers from receiving the event.
          event.stop();
          this.calculateAndDisplayRoute(event.placeId);
          this.getPlaceInformation(event.placeId);
        }
      };

      ClickEventHandler.prototype.calculateAndDisplayRoute = function(placeId) {
        var me = this;
        this.directionsService.route({
          origin: this.origin,
          destination: {placeId: placeId},
          travelMode: 'WALKING'
        }, function(response, status) {
          if (status === 'OK') {
            me.directionsDisplay.setDirections(response);
          } else {
            window.alert('Directions request failed due to ' + status);
          }
        });
      };

      ClickEventHandler.prototype.getPlaceInformation = function(placeId) {
        var me = this;
        this.placesService.getDetails({placeId: placeId}, function(place, status) {
          if (status === 'OK') {
            me.infowindow.close();
            me.infowindow.setPosition(place.geometry.location);
            me.infowindowContent.children['place-icon'].src = place.icon;
            me.infowindowContent.children['place-name'].textContent = place.name;
            me.infowindowContent.children['place-id'].textContent = place.place_id;
            me.infowindowContent.children['place-address'].textContent =
                place.formatted_address;
            me.infowindow.open(me.map);
          }
        });
      };
    </script>
    <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places&callback=initMap"
        async defer></script>
  </body>
</html>

Try it yourself

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