Google Places Autocomplete

Make an autocomplete address field using Google Place Autocomplete api

by John Wick

HTML

<script src="http://maps.googleapis.com/maps/api/js?sensor=false&amp;libraries=places&amp;dummy=.js"></script>
<div id="panel">
<input id="target" type="text" placeholder="Search Box">
<button id="button">click</button>
</div>
<div id="map-canvas"></div>

CSS

#map-canvas {
     height: 400px;
     width: 500px;
 }

#target {
        width: 345px;
      }

JavaScript

function initialize() {
  var map = new google.maps.Map(document.getElementById('map-canvas'), {
    mapTypeId: google.maps.MapTypeId.ROADMAP
  });
  var defaultBounds = new google.maps.LatLngBounds(
      new google.maps.LatLng(-33.8902, 151.1759),
      new google.maps.LatLng(-33.8474, 151.2631));
  map.fitBounds(defaultBounds);

  var input = /** @type {HTMLInputElement} */(document.getElementById('target'));
  var searchBox = new google.maps.places.SearchBox(input);
  var markers = [];

  google.maps.event.addListener(searchBox, 'places_changed', function() {
    var places = searchBox.getPlaces();

    for (var i = 0, marker; marker = markers[i]; i++) {
      marker.setMap(null);
    }

    markers = [];
    var bounds = new google.maps.LatLngBounds();
    for (var i = 0, place; place = places[i]; i++) {
      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(25, 25)
      };

      var marker = new google.maps.Marker({
        map: map,
        icon: image,
        title: place.name,
        position: place.geometry.location
      });

      markers.push(marker);

      bounds.extend(place.geometry.location);
    }

    map.fitBounds(bounds);
  });

  google.maps.event.addListener(map, 'bounds_changed', function() {
    var bounds = map.getBounds();
    searchBox.setBounds(bounds);
  });
    
 var button = document.getElementById('button'); 
  button.onclick = function() {
    input.value='test';
    input.focus(); 
  }
}

google.maps.event.addDomListener(window, 'load', initialize);