Removing Markers

This example creates a map where each click by the user creates a marker. Click the buttons to hide or delete all of those markers.

Read the documentation.

TypeScript

// In the following example, markers appear when the user clicks on the map.
// The markers are stored in an array.
// The user can then click an option to hide, show or delete the markers.
let map: google.maps.Map;
let markers: google.maps.Marker[] = [];

function initMap(): void {
  const haightAshbury = { lat: 37.769, lng: -122.446 };

  map = new google.maps.Map(document.getElementById("map") as HTMLElement, {
    zoom: 12,
    center: haightAshbury,
    mapTypeId: "terrain",
  });

  // This event listener will call addMarker() when the map is clicked.
  map.addListener("click", (event) => {
    addMarker(event.latLng);
  });

  // Adds a marker at the center of the map.
  addMarker(haightAshbury);
}

// Adds a marker to the map and push to the array.
function addMarker(location) {
  const marker = new google.maps.Marker({
    position: location,
    map: map,
  });
  markers.push(marker);
}

// Sets the map on all markers in the array.
function setMapOnAll(map: google.maps.Map | null) {
  for (let i = 0; i < markers.length; i++) {
    markers[i].setMap(map);
  }
}

// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
  setMapOnAll(null);
}

// Shows any markers currently in the array.
function showMarkers() {
  setMapOnAll(map);
}

// Deletes all markers in the array by removing references to them.
function deleteMarkers() {
  clearMarkers();
  markers = [];
}

JavaScript

// In the following example, markers appear when the user clicks on the map.
// The markers are stored in an array.
// The user can then click an option to hide, show or delete the markers.
let map;
let markers = [];

function initMap() {
  const haightAshbury = { lat: 37.769, lng: -122.446 };
  map = new google.maps.Map(document.getElementById("map"), {
    zoom: 12,
    center: haightAshbury,
    mapTypeId: "terrain",
  });
  // This event listener will call addMarker() when the map is clicked.
  map.addListener("click", (event) => {
    addMarker(event.latLng);
  });
  // Adds a marker at the center of the map.
  addMarker(haightAshbury);
}

// Adds a marker to the map and push to the array.
function addMarker(location) {
  const marker = new google.maps.Marker({
    position: location,
    map: map,
  });
  markers.push(marker);
}

// Sets the map on all markers in the array.
function setMapOnAll(map) {
  for (let i = 0; i < markers.length; i++) {
    markers[i].setMap(map);
  }
}

// Removes the markers from the map, but keeps them in the array.
function clearMarkers() {
  setMapOnAll(null);
}

// Shows any markers currently in the array.
function showMarkers() {
  setMapOnAll(map);
}

// Deletes all markers in the array by removing references to them.
function deleteMarkers() {
  clearMarkers();
  markers = [];
}

CSS

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

/* 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;
}

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Removing Markers</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <link rel="stylesheet" type="text/css" href="./style.css" />
    <script src="./index.js"></script>
  </head>
  <body>
    <div id="floating-panel">
      <input onclick="clearMarkers();" type="button" value="Hide Markers" />
      <input onclick="showMarkers();" type="button" value="Show All Markers" />
      <input onclick="deleteMarkers();" type="button" value="Delete Markers" />
    </div>
    <div id="map"></div>
    <p>Click on the map to add markers.</p>
  </body>
</html>

All

<!DOCTYPE html>
<html>
  <head>
    <title>Removing Markers</title>
    <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script>
    <script
      src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap&libraries=&v=weekly"
      defer
    ></script>
    <style type="text/css">
      /* Always set the map height explicitly to define the size of the div
       * element that contains the map. */
      #map {
        height: 100%;
      }

      /* 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;
      }
    </style>
    <script>
      // In the following example, markers appear when the user clicks on the map.
      // The markers are stored in an array.
      // The user can then click an option to hide, show or delete the markers.
      let map;
      let markers = [];

      function initMap() {
        const haightAshbury = { lat: 37.769, lng: -122.446 };
        map = new google.maps.Map(document.getElementById("map"), {
          zoom: 12,
          center: haightAshbury,
          mapTypeId: "terrain",
        });
        // This event listener will call addMarker() when the map is clicked.
        map.addListener("click", (event) => {
          addMarker(event.latLng);
        });
        // Adds a marker at the center of the map.
        addMarker(haightAshbury);
      }

      // Adds a marker to the map and push to the array.
      function addMarker(location) {
        const marker = new google.maps.Marker({
          position: location,
          map: map,
        });
        markers.push(marker);
      }

      // Sets the map on all markers in the array.
      function setMapOnAll(map) {
        for (let i = 0; i < markers.length; i++) {
          markers[i].setMap(map);
        }
      }

      // Removes the markers from the map, but keeps them in the array.
      function clearMarkers() {
        setMapOnAll(null);
      }

      // Shows any markers currently in the array.
      function showMarkers() {
        setMapOnAll(map);
      }

      // Deletes all markers in the array by removing references to them.
      function deleteMarkers() {
        clearMarkers();
        markers = [];
      }
    </script>
  </head>
  <body>
    <div id="floating-panel">
      <input onclick="clearMarkers();" type="button" value="Hide Markers" />
      <input onclick="showMarkers();" type="button" value="Show All Markers" />
      <input onclick="deleteMarkers();" type="button" value="Delete Markers" />
    </div>
    <div id="map"></div>
    <p>Click on the map to add markers.</p>
  </body>
</html>
// In the following example, markers appear when the user clicks on the map. // The markers are stored in an array. // The user can then click an option to hide, show or delete the markers. let map; let markers = []; function initMap() { const haightAshbury = { lat: 37.769, lng: -122.446 }; map = new google.maps.Map(document.getElementById("map"), { zoom: 12, center: haightAshbury, mapTypeId: "terrain", }); // This event listener will call addMarker() when the map is clicked. map.addListener("click", (event) => { addMarker(event.latLng); }); // Adds a marker at the center of the map. addMarker(haightAshbury); } // Adds a marker to the map and push to the array. function addMarker(location) { const marker = new google.maps.Marker({ position: location, map: map, }); markers.push(marker); } // Sets the map on all markers in the array. function setMapOnAll(map) { for (let i = 0; i < markers.length; i++) { markers[i].setMap(map); } } // Removes the markers from the map, but keeps them in the array. function clearMarkers() { setMapOnAll(null); } // Shows any markers currently in the array. function showMarkers() { setMapOnAll(map); } // Deletes all markers in the array by removing references to them. function deleteMarkers() { clearMarkers(); markers = []; }
/* Always set the map height explicitly to define the size of the div * element that contains the map. */ #map { height: 100%; } /* 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; }
<!DOCTYPE html> <html> <head> <title>Removing Markers</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBIwzALxUPNbatRBj3Xi1Uhp0fFzwWNBkE&callback=initMap&libraries=&v=weekly" defer ></script> <!-- jsFiddle will insert css and js --> </head> <body> <div id="floating-panel"> <input onclick="clearMarkers();" type="button" value="Hide Markers" /> <input onclick="showMarkers();" type="button" value="Show All Markers" /> <input onclick="deleteMarkers();" type="button" value="Delete Markers" /> </div> <div id="map"></div> <p>Click on the map to add markers.</p> </body> </html>

Create a starter application from sample

A skeleton starter application using TypeScript, Webpack, and Babel can be generated from this sample using one of the methods below.

Run Locally

Node.js is required to run this sample locally. Follow these instructions to install Node.js and NPM.

npx @googlemaps/js-samples init marker-remove DESTINATION_FOLDER

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