<!doctype html>
<html lang="en">
<head>
<link rel="stylesheet" href="https://tiles.locationiq.com/v3/libs/openlayers/8.2.0/ol.css" type="text/css">
<script src="https://tiles.locationiq.com/v3/libs/openlayers/8.2.0/ol.js"></script>
<style>
body { margin:0px; padding:0px; }
#map { position:absolute; top:0px; bottom:0px; width:100%; }
</style>
<script src="https://tiles.locationiq.com/v3/libs/olms/12.0.0/olms.js" type="text/javascript"></script>
<title>Add multiple markers</title>
</head>
<body>
<style>
.marker {
display: block;
border: none;
cursor: pointer;
padding: 0;
}
</style>
<div id="map"></div>
<script type="text/javascript">
var key = 'pk.aa7f5d0539c5675b7f3429402939d8fa'; //Insert your LocationIQ access token here
var styleJson = 'https://tiles-staging.locationiq.com/v3/streets/vector.json?key=' + key;
const map = new ol.Map({
target: 'map',
view: new ol.View({
center: ol.proj.fromLonLat([-122.42, 37.779]),
zoom: 12
})
});
//Add markers from geojson. This list can be generated dynamically with an AJAX call as well.
var geojson = {
"type": "FeatureCollection",
"features": [
{
"type": "Feature",
"properties": {
"message": "Foo",
"iconSize": [60, 60]
},
"geometry": {
"type": "Point",
"coordinates": [
-122.487377,
37.772487
]
}
},
{
"type": "Feature",
"properties": {
"message": "Bar",
"iconSize": [50, 50]
},
"geometry": {
"type": "Point",
"coordinates": [
-122.461627,
37.752945
]
}
},
{
"type": "Feature",
"properties": {
"message": "Baz",
"iconSize": [40, 40]
},
"geometry": {
"type": "Point",
"coordinates": [
-122.431415,
37.761766
]
}
}
]
};
//Add markers to map
geojson.features.forEach(function(marker) {
// create a DOM element for the marker
let markerEle = marker;
var el = document.createElement('div');
el.className = 'marker';
el.style.backgroundImage = 'url(https://tiles.locationiq.com/static/images/marker50px.png)';
el.style.width = '50px';
el.style.height = '50px';
//Instead of this click listener, we can attach a popup / infowindow to this marker (see `Add Popup to a marker` example)
el.addEventListener('click', function() {
window.alert(markerEle.properties.message);
});
// add marker to map
var marker = new ol.Overlay({
position: ol.proj.fromLonLat(marker.geometry.coordinates),
positioning: 'center-center',
element: el,
stopEvent: false,
className: 'marker'
});
map.addOverlay(marker);
});
olms.apply(map, styleJson);
</script>
</body>
</html>