Custom marker tooltips

How to create a custom marker tooltip with style text or images using Mapbox.js, our open source JavaScript library.

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Custom marker tooltips</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.mapbox.com/mapbox.js/v3.1.0/mapbox.js'></script>
<link href='https://api.mapbox.com/mapbox.js/v3.1.0/mapbox.css' rel='stylesheet' />
<style>
  body { margin:0; padding:0; }
  #map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<style>
.leaflet-popup-content img {
  max-width:100%;
  }
</style>
<div id='map'></div>

<script>
L.mapbox.accessToken = '<your access token here>';
var map = L.mapbox.map('map', 'mapbox.streets')
    .setView([43.229, -79.453], 5);

var myLayer = L.mapbox.featureLayer().addTo(map);

var geoJson = [{
    type: 'Feature',
    "geometry": { "type": "Point", "coordinates": [-77.03, 38.90]},
    "properties": {
        "image": "https://upload.wikimedia.org/wikipedia/commons/thumb/e/ef/Cherry_Blossoms_and_Washington_Monument.jpg/320px-Cherry_Blossoms_and_Washington_Monument.jpg",
        "url": "https://en.wikipedia.org/wiki/Washington,_D.C.",
        "marker-symbol": "star",
        "marker-color": "#ff8888",
        "marker-size": "large",
        "city": "Washington, D.C."
    }
}, {
    type: 'Feature',
    "geometry": { "type": "Point", "coordinates": [-87.63, 41.88]},
    "properties": {
        "image": "https://upload.wikimedia.org/wikipedia/commons/thumb/8/82/Chicago_sunrise_1.jpg/640px-Chicago_sunrise_1.jpg",
        "url": "https://en.wikipedia.org/wiki/Chicago",
        "marker-color": "#ff8888",
        "city": "Chicago"
    }
}, {
    type: 'Feature',
    "geometry": { "type": "Point", "coordinates": [-74.00, 40.71]},
    "properties": {
        "image": "https://upload.wikimedia.org/wikipedia/commons/thumb/3/39/NYC_Top_of_the_Rock_Pano.jpg/640px-NYC_Top_of_the_Rock_Pano.jpg",
        "url": "https://en.wikipedia.org/wiki/New_York_City",
        "marker-color": "#ff8888",
        "city": "New York City"
    }
}];

// Add custom popups to each using our custom feature properties
myLayer.on('layeradd', function(e) {
    var marker = e.layer,
        feature = marker.feature;

    // Create custom popup content
    var popupContent =  '<a target="_blank" class="popup" href="' + feature.properties.url + '">' +
                            '<img src="' + feature.properties.image + '" />' +
                            feature.properties.city +
                        '</a>';

    // http://leafletjs.com/reference.html#popup
    marker.bindPopup(popupContent,{
        closeButton: false,
        minWidth: 320
    });
});

// Add features to the map
myLayer.setGeoJSON(geoJson);
</script>
to create your own custom map and use it in this example.
Use this example by copying its source into your own HTML page and replacing the Map ID with one of your own from your projects. Having trouble with JavaScript? Try out Codecademy or contact our support team.
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