gapi.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>Google Maps JavaScript API v3 Example: Place Search</title>
    <script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=true&libraries=places"></script>

    <style>
      #map {
        height: 400px;
        width: 600px;
        border: 1px solid #333;
        margin-top: 0.6em;
      }
    </style>

    <script>
      var map;
      var infowindow;

      function initialize() {
        var ichacklocation = new google.maps.LatLng(51.499767, -0.176259);

        map = new google.maps.Map(document.getElementById('map'), {
          mapTypeId: google.maps.MapTypeId.ROADMAP,
          center: ichacklocation,
          zoom: 15
        });

        var request = {
          location: ichacklocation,
          radius: 500,
          types: ['store']
        };
        infowindow = new google.maps.InfoWindow();
        var service = new google.maps.places.PlacesService(map);
        service.nearbySearch(request, callback);
      }

      function callback(results, status) {
        if (status == google.maps.places.PlacesServiceStatus.OK) {
          for (var i = 0; i < results.length; i++) {
            createMarker(results[i]);
          }
        }
      }

      function createMarker(place) {
        var placeLoc = place.geometry.location;
        var marker = new google.maps.Marker({
          map: map,
          position: place.geometry.location
        });

        google.maps.event.addListener(marker, 'click', function() {
          infowindow.setContent(place.name);
          infowindow.open(map, this);
        });
      }

      google.maps.event.addDomListener(window, 'load', initialize);
    </script>
  </head>
  <body>
    <div id="map"></div>
    <div id="text">
      <pre>
var request = {
  location: new google.maps.LatLng(51.499767, -0.176259),
  radius: 500,
  types: ['store']
};
      </pre>
  </body>
</html>