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Marker Animations With setTimeout()

This example uses window.setTimeout() to place markers on the map consecutively rather than all at once when a Drop Markers button is clicked.

Read the documentation.

JavaScript

// If you're adding a number of markers, you may want to drop them on the map
// consecutively rather than all at once. This example shows how to use
// window.setTimeout() to space your markers' animation.

var neighborhoods = [
  { lat: 52.511, lng: 13.447 },
  { lat: 52.549, lng: 13.422 },
  { lat: 52.497, lng: 13.396 },
  { lat: 52.517, lng: 13.394 }
];

var markers = [];
var map;

function initMap() {
  map = new google.maps.Map(document.getElementById("map"), {
    zoom: 12,
    center: { lat: 52.52, lng: 13.41 }
  });
}

function drop() {
  clearMarkers();
  for (var i = 0; i < neighborhoods.length; i++) {
    addMarkerWithTimeout(neighborhoods[i], i * 200);
  }
}

function addMarkerWithTimeout(position, timeout) {
  window.setTimeout(function() {
    markers.push(
      new google.maps.Marker({
        position: position,
        map: map,
        animation: google.maps.Animation.DROP
      })
    );
  }, timeout);
}

function clearMarkers() {
  for (var i = 0; i < markers.length; i++) {
    markers[i].setMap(null);
  }
  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;
}

#floating-panel {
  margin-left: -52px;
}

HTML

<!DOCTYPE html>
<html>
  <head>
    <title>Marker Animations With setTimeout()</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">
      <button id="drop" onclick="drop()">Drop Markers</button>
    </div>
    <div id="map"></div>
  </body>
</html>

All

<!DOCTYPE html>
<html>
  <head>
    <title>Marker Animations With setTimeout()</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;
      }

      #floating-panel {
        margin-left: -52px;
      }
    </style>
    <script>
      (function(exports) {
        "use strict";

        // If you're adding a number of markers, you may want to drop them on the map
        // consecutively rather than all at once. This example shows how to use
        // window.setTimeout() to space your markers' animation.
        var neighborhoods = [
          {
            lat: 52.511,
            lng: 13.447
          },
          {
            lat: 52.549,
            lng: 13.422
          },
          {
            lat: 52.497,
            lng: 13.396
          },
          {
            lat: 52.517,
            lng: 13.394
          }
        ];
        exports.markers = [];

        function initMap() {
          exports.map = new google.maps.Map(document.getElementById("map"), {
            zoom: 12,
            center: {
              lat: 52.52,
              lng: 13.41
            }
          });
        }

        function drop() {
          clearMarkers();

          for (var i = 0; i < neighborhoods.length; i++) {
            addMarkerWithTimeout(neighborhoods[i], i * 200);
          }
        }

        function addMarkerWithTimeout(position, timeout) {
          window.setTimeout(function() {
            exports.markers.push(
              new google.maps.Marker({
                position: position,
                map: exports.map,
                animation: google.maps.Animation.DROP
              })
            );
          }, timeout);
        }

        function clearMarkers() {
          for (var i = 0; i < exports.markers.length; i++) {
            exports.markers[i].setMap(null);
          }

          exports.markers = [];
        }

        exports.addMarkerWithTimeout = addMarkerWithTimeout;
        exports.clearMarkers = clearMarkers;
        exports.drop = drop;
        exports.initMap = initMap;
        exports.neighborhoods = neighborhoods;
      })((this.window = this.window || {}));
    </script>
  </head>
  <body>
    <div id="floating-panel">
      <button id="drop" onclick="drop()">Drop Markers</button>
    </div>
    <div id="map"></div>
  </body>
</html>
(function(exports) { "use strict"; // If you're adding a number of markers, you may want to drop them on the map // consecutively rather than all at once. This example shows how to use // window.setTimeout() to space your markers' animation. var neighborhoods = [ { lat: 52.511, lng: 13.447 }, { lat: 52.549, lng: 13.422 }, { lat: 52.497, lng: 13.396 }, { lat: 52.517, lng: 13.394 } ]; exports.markers = []; function initMap() { exports.map = new google.maps.Map(document.getElementById("map"), { zoom: 12, center: { lat: 52.52, lng: 13.41 } }); } function drop() { clearMarkers(); for (var i = 0; i < neighborhoods.length; i++) { addMarkerWithTimeout(neighborhoods[i], i * 200); } } function addMarkerWithTimeout(position, timeout) { window.setTimeout(function() { exports.markers.push( new google.maps.Marker({ position: position, map: exports.map, animation: google.maps.Animation.DROP }) ); }, timeout); } function clearMarkers() { for (var i = 0; i < exports.markers.length; i++) { exports.markers[i].setMap(null); } exports.markers = []; } exports.addMarkerWithTimeout = addMarkerWithTimeout; exports.clearMarkers = clearMarkers; exports.drop = drop; exports.initMap = initMap; exports.neighborhoods = neighborhoods; })((this.window = this.window || {}));
/* 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; } #floating-panel { margin-left: -52px; }
<!DOCTYPE html> <html> <head> <title>Marker Animations With setTimeout()</title> <script src="https://polyfill.io/v3/polyfill.min.js?features=default"></script> <script src="https://maps.googleapis.com/maps/api/js?key=&callback=initMap&libraries=&v=weekly" defer ></script> <!-- jsFiddle will insert css and js --> </head> <body> <div id="floating-panel"> <button id="drop" onclick="drop()">Drop Markers</button> </div> <div id="map"></div> </body> </html>