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.
// 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: 52.520, lng: 13.410}
});
}
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 = [];
}
<div id="floating-panel"> <button id="drop" onclick="drop()">Drop Markers</button> </div> <div id="map"></div>
/* 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;
}
<!-- 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>
Try it yourself
You can experiment with this code in JSFiddle by clicking the <> icon in the
top-right corner of the code window.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Marker Animations With setTimeout()</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;
}
#floating-panel {
margin-left: -52px;
}
</style>
</head>
<body>
<div id="floating-panel">
<button id="drop" onclick="drop()">Drop Markers</button>
</div>
<div id="map"></div>
<script>
// 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: 52.520, lng: 13.410}
});
}
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 = [];
}
</script>
<script async defer
src="https://maps.googleapis.com/maps/api/js?key=YOUR_API_KEY&callback=initMap">
</script>
</body>
</html>