geocoding-component-restriction

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

HTML

<!doctype html>
<!--
@license
Copyright 2026 Google LLC. All Rights Reserved.
SPDX-License-Identifier: Apache-2.0
-->

<html>
  <head>
    <title>Geocoding Component Restriction</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>
    <div id="floating-panel">
      <code>componentRestrictions: {country: "AU", postalCode: "2000"}</code
      ><br />
      <button id="submit">Geocode</button>
    </div>
    <gmp-map center="-33.865,151.209" zoom="8" map-id="DEMO_MAP_ID"></gmp-map>
  </body>
</html>

CSS

/**
 * @license
 * Copyright 2026 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

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

#floating-panel {
  position: absolute;
  top: 10px;
  left: 25%;
  z-index: 5;
  background-color: #fff;
  padding: 5px;
  border: 1px solid #999;
  text-align: center;
  font-family: 'Roboto', sans-serif;
  line-height: 30px;
  padding-left: 10px;
}

JavaScript

'use strict';
/**
 * @license
 * Copyright 2026 Google LLC. All Rights Reserved.
 * SPDX-License-Identifier: Apache-2.0
 */

async function init() {
  const [{ Geocoder }, { AdvancedMarkerElement }] = await Promise.all([
    google.maps.importLibrary('geocoding'),
    google.maps.importLibrary('marker'),
    google.maps.importLibrary('maps'),
  ]);

  const geocoder = new Geocoder();
  const mapElement = document.querySelector('gmp-map');
  const innerMap = mapElement.innerMap;

  document.getElementById('submit').addEventListener('click', async () => {
    const { results } = await geocoder.geocode({
      address: '483 George St.',
      componentRestrictions: {
        country: 'AU',
        postalCode: '2000',
      },
    });

    innerMap.setCenter(results[0].geometry.location);
    new AdvancedMarkerElement({
      map: innerMap,
      position: results[0].geometry.location,
    });
  });
}

void init();