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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


      

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="./app.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>
      "use strict";

      // 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>
"use strict"; // 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=AIzaSyCb1xprYSpXd0q_yDsJ1W2UGhfl9_YGKU0&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>