ehp ehp - 18 days ago 11
Javascript Question

How to get latitude and longitude from google maps v3 api?

I am trying create a map using google maps v3 api. I have found the below code over internet and I want to show the latitude and logitude in map window instead of address.

<script>
function initialize() {
var mapOptions = {
center: new google.maps.LatLng(-33.8688, 151.2195),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
var map = new google.maps.Map(document.getElementById('map_canvas'),
mapOptions);

var input = document.getElementById('searchTextField');
var autocomplete = new google.maps.places.Autocomplete(input);

autocomplete.bindTo('bounds', map);

var infowindow = new google.maps.InfoWindow();
var marker = new google.maps.Marker({
map: map
});

google.maps.event.addListener(autocomplete, 'place_changed', function() {
infowindow.close();
marker.setVisible(false);
input.className = '';
var place = autocomplete.getPlace();
if (!place.geometry) {
// Inform the user that the place was not found and return.
input.className = 'notfound';
return;
}

// If the place has a geometry, then present it on a map.
if (place.geometry.viewport) {
map.fitBounds(place.geometry.viewport);
} else {
map.setCenter(place.geometry.location);
map.setZoom(17); // Why 17? Because it looks good.
}
var image = {
url: place.icon,
size: new google.maps.Size(71, 71),
origin: new google.maps.Point(0, 0),
anchor: new google.maps.Point(17, 34),
scaledSize: new google.maps.Size(35, 35)
};
marker.setIcon(image);
marker.setPosition(place.geometry.location);
marker.setVisible(true);

var address = '';
if (place.address_components) {
address = [
(place.address_components[0] && place.address_components[0].short_name || ''),
(place.address_components[1] && place.address_components[1].short_name || ''),
(place.address_components[2] && place.address_components[2].short_name || '')
].join(' ');
}

infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
infowindow.open(map, marker);
});

// Sets a listener on a radio button to change the filter type on Places
// Autocomplete.
function setupClickListener(id, types) {
var radioButton = document.getElementById(id);
google.maps.event.addDomListener(radioButton, 'click', function() {
autocomplete.setTypes(types);
});
}

setupClickListener('changetype-all', []);
setupClickListener('changetype-establishment', ['establishment']);
setupClickListener('changetype-geocode', ['geocode']);
}
google.maps.event.addDomListener(window, 'load', initialize);
</script>
</head>
<body>
<div>
<input id="searchTextField" type="text" size="50">
<input type="radio" name="type" id="changetype-all" checked="checked">
<label for="changetype-all">All</label>

<input type="radio" name="type" id="changetype-establishment">
<label for="changetype-establishment">Establishments</label>

<input type="radio" name="type" id="changetype-geocode">
<label for="changetype-geocode">Geocodes</lable>
</div>
<div id="map_canvas"></div>
</body>
</html>


Please some one help me to get and show latitude and longitude.
Thanks,
Enamul

Answer

Where you have

  var address = '';
  if (place.address_components) {
    address = [
      (place.address_components[0] && place.address_components[0].short_name || ''),
      (place.address_components[1] && place.address_components[1].short_name || ''),
      (place.address_components[2] && place.address_components[2].short_name || '')
    ].join(' ');
  }

  infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + address);
  infowindow.open(map, marker);

Change the infowindow line to read

  infowindow.setContent('<div><strong>' + place.name + '</strong><br>' + place.geometry.location.lat() + ',' + place.geometry.location.lng());