Marker Animations With setTimeout()

This example useswindow.setTimeout()to place markers on the map consecutively rather than all at once when aDrop Markersbutton is clicked.

Read thedocumentation.

TypeScript

// 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.

constneighborhoods:google.maps.LatLngLiteral[]=[
{lat:52.511,lng:13.447},
{lat:52.549,lng:13.422},
{lat:52.497,lng:13.396},
{lat:52.517,lng:13.394},
];

letmarkers:google.maps.Marker[]=[];
letmap:google.maps.Map;

functioninitMap():void{
map=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{
zoom:12,
center:{lat:52.52,lng:13.41},
});

document.getElementById("drop")!.addEventListener("click",drop);
}

functiondrop():void{
clearMarkers();

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

functionaddMarkerWithTimeout(
position:google.maps.LatLngLiteral,
timeout:number
):void{
window.setTimeout(()=>{
markers.push(
newgoogle.maps.Marker({
position:position,
map,
animation:google.maps.Animation.DROP,
})
);
},timeout);
}

functionclearMarkers():void{
for(leti=0;i<markers.length;i++){
markers[i].setMap(null);
}

markers=[];
}

declareglobal{
interfaceWindow{
initMap:()=>void;
}
}
window.initMap=initMap;
index.ts

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.
constneighborhoods=[
{lat:52.511,lng:13.447},
{lat:52.549,lng:13.422},
{lat:52.497,lng:13.396},
{lat:52.517,lng:13.394},
];
letmarkers=[];
letmap;

functioninitMap(){
map=newgoogle.maps.Map(document.getElementById("map"),{
zoom:12,
center:{lat:52.52,lng:13.41},
});
document.getElementById("drop").addEventListener("click",drop);
}

functiondrop(){
clearMarkers();

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

functionaddMarkerWithTimeout(position,timeout){
window.setTimeout(()=>{
markers.push(
newgoogle.maps.Marker({
position:position,
map,
animation:google.maps.Animation.DROP,
}),
);
},timeout);
}

functionclearMarkers(){
for(leti=0;i<markers.length;i++){
markers[i].setMap(null);
}

markers=[];
}

window.initMap=initMap;
index.js

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:1pxsolid#999;
text-align:center;
font-family:"Roboto","sans-serif";
line-height:30px;
padding-left:10px;
}

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

style.css

HTML

<html>
<head>
<title>Marker Animations With setTimeout()</title>

<link rel= "stylesheet" type= "text/css" href= "./style.css" />
<script type= "module" src= "./index.js" ></script>
</head>
<body>
<div id= "floating-panel" >
<button id= "drop" >Drop Markers</button>
</div>
<div id= "map" ></div>

<!--
The `defer` attribute causes the script to execute after the full HTML
document has been parsed. For non-blocking uses, avoiding race conditions,
and consistent behavior across browsers, consider loading using Promises. See
https://developers.google /maps/documentation/javascript/load-maps-js-api
for more information.
-->
<script
src= "https://maps.googleapis /maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
defer
></script>
</body>
</html>
index.html

Try Sample

Clone Sample

Git and Node.js are required to run this sample locally. Follow theseinstructionsto install Node.js and NPM. The following commands clone, install dependencies and start the sample application. 

gitclone-bsample-marker-animations-iterationhttps://github /googlemaps/js-samples.git
cdjs-samples
npmi
npmstart

Other samples can be tried by switching to any branch beginning withsample-SAMPLE_NAME. 

gitcheckoutsample-SAMPLE_NAME
npmi
npmstart