Retrieving Autocomplete Predictions

Sample code for Google Maps Platform JavaScript API author(s): Justin Poehnelt

HTML

<!doctype html>
<!--
 @license
 Copyright 2019 Google LLC. All Rights Reserved.
 SPDX-License-Identifier: Apache-2.0
-->
<html>
  <head>
    <title>Retrieving Autocomplete Predictions</title>

    <!-- jsFiddle will insert css and js -->
  </head>
  <body>
    <p>Query suggestions for 'pizza near Syd':</p>
    <ul id="results"></ul>
    <!-- Replace Powered By Google image src with self hosted image. https://developers.google.com/maps/documentation/places/web-service/policies#other_attribution_requirements -->
    <img
      class="powered-by-google"
      src="https://storage.googleapis.com/geo-devrel-public-buckets/powered_by_google_on_white.png"
      alt="Powered by Google"
    />

    <!-- 
      The `defer` attribute causes the script to execute after the full HTML
      document has been parsed. For non-blocking uses, avoiding race conditions,
      and consistent behavior across browsers, consider loading using Promises. See
      https://developers.google.com/maps/documentation/javascript/load-maps-js-api
      for more information.
      -->
    <script
      src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initService&libraries=places&v=weekly"
      defer
    ></script>
  </body>
</html>

CSS

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

JavaScript

/**
 * @license
 * Copyright 2019 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */
// This example retrieves autocomplete predictions programmatically from the
// autocomplete service, and displays them as an HTML list.
// This example requires the Places library. Include the libraries=places
// parameter when you first load the API. For example:
// <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&libraries=places">
function initService() {
  const displaySuggestions = function (predictions, status) {
    if (status != google.maps.places.PlacesServiceStatus.OK || !predictions) {
      alert(status);
      return;
    }

    predictions.forEach((prediction) => {
      const li = document.createElement("li");

      li.appendChild(document.createTextNode(prediction.description));
      document.getElementById("results").appendChild(li);
    });
  };

  const service = new google.maps.places.AutocompleteService();

  service.getQueryPredictions({ input: "pizza near Syd" }, displaySuggestions);
}

window.initService = initService;