<style>
#map-ui {
position:absolute;
top:10px;left:10px;
z-index:100;
}
#map-ui ul {
list-style:none;
margin:0;padding:0;
}
#map-ui a {
font-size:13px;
background:#FFF;
color:#3C4E5A;
display:block;
margin:0;padding:0;
border:1px solid #BBB;
border-bottom-width:0;
min-width:138px;
padding:10px;
text-decoration:none;
}
#map-ui a:hover { background:#ECF5FA; }
#map-ui li:last-child a {
border-bottom-width:1px;
-webkit-border-radius:0 0 3px 3px;
border-radius:0 0 3px 3px;
}
#map-ui li:first-child a {
-webkit-border-radius:3px 3px 0 0;
border-radius:3px 3px 0 0;
}
#map-ui a.active {
background:#3887BE;
border-color:#3887BE;
color:#FFF;
}
</style>
<div id='map-ui'>
<ul>
<li><a href='#' id='filter-food'>show only food events</a></li>
<li><a href='#' class='active' id='filter-all'>show all events</a></li>
</ul>
</div>
<div id='map'></div>
<script>
var map = mapbox.map('map');
map.addLayer(mapbox.layer().id('examples.map-zr0njcqy'));
var markersLayer = mapbox.markers.layer().id('examples.map-zr0njcqy', function() {
// This code is in the second callback to id because it depends
// on the features being loaded asynchronously. If it were put right
// after the call to .id(), the markers layer wouldn't contain any
// data - it would still be on its way from MapBox to the browser.
// Cinch the map display to show all markers
map.extent(markersLayer.extent());
var food = document.getElementById('filter-food');
var all = document.getElementById('filter-all');
food.onclick = function(e) {
all.className = '';
this.className = 'active';
// The filter function takes a GeoJSON feature object
// and returns true to show it or false to hide it.
markersLayer.filter(function(f) {
return f.properties['marker-symbol'] === 'fast-food';
});
return false;
};
all.onclick = function() {
food.className = '';
this.className = 'active';
markersLayer.filter(function(f) {
// Returning true for all markers shows everything.
return true;
});
return false;
};
});
map.addLayer(markersLayer);
// Attribute map
map.ui.attribution.add()
.content('<a href="http://mapbox.com/about/maps">Terms & Feedback</a>');
</script>