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feat: Migrates the event-poi sample to js-api-samples. (#1135)
* feat: Migrates the event-poi sample to js-api-samples. * Remove infowindow-content div from index.html Removed the infowindow-content div from the map. * Refactor infowindow handling in event POI sample Refactor initMap and showInfoWindow functions to correctly handle infowindow instance. * Refactor infowindow-content styles in CSS Remove infowindow-content styles and update map display. * Remove inline display style from map element
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‎samples/event-poi/README.md‎

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# Google Maps JavaScript Sample
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## event-poi
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This example demonstrates the use of click event listeners on POIs (points of interest).
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## Setup
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### Before starting run:
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`npm i`
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### Run an example on a local web server
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`cd samples/event-poi`
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`npm start`
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### Build an individual example
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`cd samples/event-poi`
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`npm run build`
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From 'samples':
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`npm run build --workspace=event-poi/`
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### Build all of the examples.
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From 'samples':
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`npm run build-all`
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### Run lint to check for problems
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`cd samples/event-poi`
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`npx eslint index.ts`
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## Feedback
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For feedback related to this sample, please open a new issue on
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[GitHub](https://github.com/googlemaps-samples/js-api-samples/issues).

‎samples/event-poi/index.html‎

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<!doctype html>
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<!--
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@license
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Copyright 2026 Google LLC. All Rights Reserved.
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SPDX-License-Identifier: Apache-2.0
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-->
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<!-- [START maps_event_poi] -->
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<html>
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<head>
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<title>POI Click Events</title>
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<link rel="stylesheet" type="text/css" href="./style.css" />
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<script type="module" src="./index.js"></script>
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<!-- prettier-ignore -->
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<script>(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))})
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({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
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</head>
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<body>
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<gmp-map center="-33.871, 151.197" zoom="18">
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</gmp-map>
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</body>
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</html>
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<!-- [END maps_event_poi] -->

‎samples/event-poi/index.ts‎

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/**
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* @license
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* Copyright 2026 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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// [START maps_event_poi]
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let innerMap;
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async function initMap() {
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// Request the needed libraries.
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await google.maps.importLibrary('maps');
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const mapElement = document.querySelector(
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'gmp-map'
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) as google.maps.MapElement;
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innerMap = mapElement.innerMap;
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// Create the initial InfoWindow.
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let infowindow = new google.maps.InfoWindow({});
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innerMap.addListener('click', (event) => {
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// Prevent the default POI info window from showing.
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event.stop();
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// If the event has a placeId, show the info window.
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if (isIconMouseEvent(event) && event.placeId) {
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showInfoWindow(event, infowindow);
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} else {
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// Otherwise, close the info window.
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infowindow.close();
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}
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});
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}
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// Helper function to show the info window.
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async function showInfoWindow(event: google.maps.IconMouseEvent, infowindow: google.maps.InfoWindow) {
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// Retrieve the place details for the selected POI.
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const place = await getPlaceDetails(event.placeId);
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// Assemble the info window content.
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const content = document.createElement('div');
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const address = document.createElement('div');
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const placeId = document.createElement('div');
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address.textContent = place.formattedAddress || '';
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placeId.textContent = place.id || '';
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content.append(address, placeId);
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// Create an element to use the place name as header content.
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const name = document.createElement('div');
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name.style.fontWeight = 'bold';
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name.style.fontSize = 'medium';
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name.textContent = place.displayName || '';
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// Update info window options.
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infowindow.setOptions({
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position: event.latLng,
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pixelOffset: new google.maps.Size(0, -30),
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headerContent: name,
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content: content,
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});
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innerMap.panTo(event.latLng);
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infowindow.open(innerMap);
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}
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// Helper function to get place details.
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async function getPlaceDetails(placeId) {
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// Import the Places library.
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const { Place } = (await google.maps.importLibrary(
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'places'
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)) as google.maps.PlacesLibrary;
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// Create a Place instance with the place id and fetch the details.
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const place = new Place({ id: placeId });
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await place.fetchFields({
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fields: ['displayName', 'formattedAddress'],
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});
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// Return the place details.
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return place;
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}
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// Helper type guard to determine if the event is an IconMouseEvent.
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function isIconMouseEvent(
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e: google.maps.MapMouseEvent | google.maps.IconMouseEvent
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): e is google.maps.IconMouseEvent {
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return 'placeId' in e;
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}
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initMap();
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// [END maps_event_poi]

‎samples/event-poi/package.json‎

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{
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"name": "@js-api-samples/event-poi",
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"version": "1.0.0",
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"scripts": {
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"build": "tsc && bash ../jsfiddle.sh event-poi && bash ../app.sh event-poi && bash ../docs.sh event-poi && npm run build:vite --workspace=. && bash ../dist.sh event-poi",
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"test": "tsc && npm run build:vite --workspace=.",
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"start": "tsc && vite build --base './' && vite",
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"build:vite": "vite build --base './'",
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"preview": "vite preview"
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},
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"dependencies": {
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}
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}

‎samples/event-poi/style.css‎

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/**
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* @license
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* Copyright 2026 Google LLC. All Rights Reserved.
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* [START maps_event_poi] */
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/* Optional: Makes the sample page fill the window. */
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html,
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body {
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height: 100%;
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margin: 0;
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padding: 0;
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}
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.title {
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font-weight: bold;
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}
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/* [END maps_event_poi] */

‎samples/event-poi/tsconfig.json‎

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{
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"compilerOptions": {
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"module": "esnext",
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"target": "esnext",
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"strict": true,
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"noImplicitAny": false,
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"lib": [
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"es2015",
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"esnext",
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"es6",
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"dom",
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"dom.iterable"
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],
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"moduleResolution": "Node",
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"jsx": "preserve"
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}
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}

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