place-nearby-search

Sample code supporting Google Maps Platform JavaScript API documentation. author(s): Geo Developer IX Documentation Team

HTML

<!doctype html>
<!--
 @license
 Copyright 2019 Google LLC. All Rights Reserved.
 SPDX-License-Identifier: Apache-2.0
-->

<html>
  <head>
    <title>Nearby Search</title>

    <script>
      // prettier-ignore
      (g=>{var h,a,k,p="The Google Maps JavaScript API",c="google",l="importLibrary",q="__ib__",m=document,b=window;b=b[c]||(b[c]={});var d=b.maps||(b.maps={}),r=new Set,e=new URLSearchParams,u=()=>h||(h=new Promise(async(f,n)=>{await (a=m.createElement("script"));e.set("libraries",[...r]+"");for(k in g)e.set(k.replace(/[A-Z]/g,t=>"_"+t[0].toLowerCase()),g[k]);e.set("callback",c+".maps."+q);a.src=`https://maps.${c}apis.com/maps/api/js?`+e;d[q]=f;a.onerror=()=>h=n(Error(p+" could not load."));a.nonce=m.querySelector("script[nonce]")?.nonce||"";m.head.append(a)}));d[l]?console.warn(p+" only loads once. Ignoring:",g):d[l]=(f,...n)=>r.add(f)&&u().then(()=>d[l](f,...n))})({
            });
    </script>
  </head>

  <body>
    <gmp-map center="45.438646,12.327573" zoom="14" map-id="DEMO_MAP_ID"
      ><!-- Map id is required for Advanced Markers. -->
      <gmp-advanced-marker></gmp-advanced-marker>
      <div id="controls" slot="control-inline-start-block-start">
        <select name="types" class="type-select">
          <option value="cafe" selected>Cafe</option>
          <option value="restaurant">Restaurant</option>
          <option value="museum">Museum</option>
          <option value="monument">Monument</option>
          <option value="park">Park</option>
        </select>
      </div>
    </gmp-map>
  </body>
</html>

CSS

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

/* 
 * Always set the map height explicitly to define the size of the div element
 * that contains the map. 
 */
gmp-map {
  height: 100%;
}

#map-container {
  display: flex;
  flex-direction: row;
  height: 100%;
}

/* 
 * Optional: Makes the sample page fill the window. 
 */
html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

.type-select {
  width: 400px;
  height: 32px;
  border: 1px solid #000;
  border-radius: 10px;
  flex-grow: 1;
  padding: 0 10px;
  margin-left: 10px;
  margin-top: 10px;
}

JavaScript

'use strict';
/**
 * @license
 * Copyright 2024 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

const mapElement = document.querySelector('gmp-map');
let innerMap;
let center;
let typeSelect;
let infoWindow;

async function init() {
  const [{ InfoWindow }, { event }] = await Promise.all([
    google.maps.importLibrary('maps'),
    google.maps.importLibrary('core'),
  ]);

  innerMap = mapElement.innerMap;
  innerMap.setOptions({
    mapTypeControl: false,
  });

  typeSelect = document.querySelector('.type-select');

  typeSelect.addEventListener('change', () => {
    void nearbySearch();
  });

  infoWindow = new InfoWindow();

  // Kick off an initial search once map has loaded.
  event.addListenerOnce(innerMap, 'idle', () => {
    void nearbySearch();
  });
}

async function nearbySearch() {
  const [
    { Place, SearchNearbyRankPreference },
    { AdvancedMarkerElement },
    { spherical },
  ] = await Promise.all([
    google.maps.importLibrary('places'),
    google.maps.importLibrary('marker'),
    google.maps.importLibrary('geometry'),
  ]);

  // Get bounds and radius to constrain search.
  center = mapElement.center;
  const ne = innerMap.getBounds().getNorthEast();
  const sw = innerMap.getBounds().getSouthWest();
  const diameter = spherical.computeDistanceBetween(ne, sw);
  const radius = Math.min(diameter / 2, 50000); // Radius cannot be more than 50000.

  const request = {
    // required parameters
    fields: ['displayName', 'location', 'formattedAddress', 'googleMapsURI'],
    locationRestriction: {
      center,
      radius,
    },
    // optional parameters
    includedPrimaryTypes: [typeSelect.value],
    maxResultCount: 5,
    rankPreference: SearchNearbyRankPreference.POPULARITY,
  };

  const { places } = await Place.searchNearby(request);

  if (places.length) {
    const { LatLngBounds } = await google.maps.importLibrary('core');
    const bounds = new LatLngBounds();

    // First remove all existing...