Es kann losgehen!

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Die Google Maps JavaScript API aktivieren

Zum Einstieg führen wir Sie durch die Google Developers Console, wo Sie vorab Folgendes tun müssen:

  1. Ein Projekt erstellen oder auswählen
  2. Die Google Maps JavaScript API und zugehörige Dienste aktivieren
  3. Zugehörige Schlüssel erstellen
Weiter

Remove Markers

Read the documentation or view this example full screen.

// 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.
var map;
var markers = [];

function initMap() {
  var 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', function(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) {
  var 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 (var 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 = [];
}
<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>
/* 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;
}
 <!-- Replace the value of the key parameter with your own API key. -->
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap">
</script>


Probieren Sie es selbst aus

Bewegen Sie die Maus oben rechts über den Codeblock, um den Code zu kopieren, oder öffnen Sie ihn in JSFiddle.

<!DOCTYPE html>
<html>
  <head>
    <title>Remove Markers</title>
    <style>
      /* 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>
  </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>
    <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.
      var map;
      var markers = [];

      function initMap() {
        var 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', function(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) {
        var 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 (var 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>
    <script async defer
    src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
    </script>
  </body>
</html>

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Google Maps JavaScript API
Google Maps JavaScript API