Maps API v3 SImple Places Autocomplete

Simple Places API autocomplete field

by Alex Azuero

HTML

<script src="https://maps.googleapis.com/maps/api/js?libraries=places&amp;language=en"></script>
<input id="pac-input" class="controls" type="text" placeholder="Enter a location">
<div id="map">
</div>

CSS

.controls {
  margin-top: 10px;
  border: 1px solid transparent;
  border-radius: 2px 0 0 2px;
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  height: 32px;
  outline: none;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

#pac-input {
  background-color: #fff;
  font-family: Roboto;
  font-size: 15px;
  font-weight: 300;
  margin-left: 12px;
  padding: 0 11px 0 13px;
  text-overflow: ellipsis;
  width: 300px;
}

#pac-input:focus {
  border-color: #4d90fe;
}

.pac-container {
  font-family: Roboto;
}

#map {
  height: 400px;
}

JavaScript

function initMap() {

  var map = new google.maps.Map(document.getElementById('map'), {
    center: {
      lat: -33.8688,
      lng: 151.2195
    },
    zoom: 13
  });

  var input = /** @type {!HTMLInputElement} */ (
    document.getElementById('pac-input'));

  map.controls[google.maps.ControlPosition.TOP_LEFT].push(input);

  var autocomplete = new google.maps.places.Autocomplete(input);

  var marker = new google.maps.Marker({
    map: map,
    anchorPoint: new google.maps.Point(0, -29)
  });

  autocomplete.addListener('place_changed', function() {

    marker.setVisible(false);
    var place = autocomplete.getPlace();

    if (!place.geometry) {
      window.alert("Autocomplete's returned place contains no geometry");
      return;
    }

    console.log(place);

    // 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.
    }

    marker.setPosition(place.geometry.location);
    marker.setVisible(true);
  });
}

initMap();