Control marker visibility by zoom level

This example shows controlling marker visibility by zoom level. See the markers' visibility change (begin by zooming out):

Read the documentation.

TypeScript

const mapElement = document.querySelector('gmp-map') as google.maps.MapElement;

async function initMap() {
  // Request needed libraries.
  const { Map } = (await google.maps.importLibrary(
    'maps'
  )) as google.maps.MapsLibrary;
  const { AdvancedMarkerElement } = (await google.maps.importLibrary(
    'marker'
  )) as google.maps.MarkerLibrary;

  const markerOptions = [
    {
      position: { lat: 37.4239163, lng: -122.094 },
      title: 'This marker is visible at zoom level 15 and higher.',
      minZoom: 14,
    },
    {
      position: { lat: 37.4245, lng: -122.096 },
      title: 'This marker is visible at zoom level 16 and higher.',
      minZoom: 15,
    },
    {
      position: { lat: 37.4249, lng: -122.095 },
      title: 'This marker is visible at zoom level 17 and higher.',
      minZoom: 16,
    },
    {
      position: { lat: 37.425, lng: -122.0955 },
      title: 'This marker is visible at zoom level 18 and higher.',
      minZoom: 17,
    },
  ];

  const markers: google.maps.marker.AdvancedMarkerElement[] = [];
  for (const { position, title } of markerOptions) {
    const marker = new AdvancedMarkerElement({ position, title });
    mapElement.append(marker);
    markers.push(marker);
  }

  mapElement.innerMap.addListener('zoom_changed', () => {
    let zoom = mapElement.innerMap.getZoom();
    for (let i = 0; i < markers.length; i++) {
      const { position, minZoom } = markerOptions[i];
      markers[i].position = zoom! > minZoom ? position : null;
    }
  });
}

initMap();
index.ts

JavaScript

const mapElement = document.querySelector('gmp-map');
async function initMap() {
    // Request needed libraries.
    const { Map } = (await google.maps.importLibrary('maps'));
    const { AdvancedMarkerElement } = (await google.maps.importLibrary('marker'));
    const markerOptions = [
        {
            position: { lat: 37.4239163, lng: -122.094 },
            title: 'This marker is visible at zoom level 15 and higher.',
            minZoom: 14,
        },
        {
            position: { lat: 37.4245, lng: -122.096 },
            title: 'This marker is visible at zoom level 16 and higher.',
            minZoom: 15,
        },
        {
            position: { lat: 37.4249, lng: -122.095 },
            title: 'This marker is visible at zoom level 17 and higher.',
            minZoom: 16,
        },
        {
            position: { lat: 37.425, lng: -122.0955 },
            title: 'This marker is visible at zoom level 18 and higher.',
            minZoom: 17,
        },
    ];
    const markers = [];
    for (const { position, title } of markerOptions) {
        const marker = new AdvancedMarkerElement({ position, title });
        mapElement.append(marker);
        markers.push(marker);
    }
    mapElement.innerMap.addListener('zoom_changed', () => {
        let zoom = mapElement.innerMap.getZoom();
        for (let i = 0; i < markers.length; i++) {
            const { position, minZoom } = markerOptions[i];
            markers[i].position = zoom > minZoom ? position : null;
        }
    });
}
initMap();
index.js

CSS

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

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

style.css

HTML

<html>
  <head>
    <title>Advanced Marker Zoom Visibility</title>

    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script type="module" src="./index.js"></script>
    <!-- prettier-ignore -->
    <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))})
        ({key: "AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8", v: "weekly"});</script>
  </head>
  <body>
    <gmp-map
      center="37.424563902650114,-122.09512859577026"
      zoom="18"
      map-id="4504f8b37365c3d0"
    ></gmp-map>
  </body>
</html>
index.html

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow these instructions to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. 

  git clone https://github.com/googlemaps-samples/js-api-samples.git
  cd samples/advanced-markers-zoom
  npm i
  npm start