D3 Examples - Leaflet.js Tips, Step 6 (add hovers)

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<!DOCTYPE html>
<html lang="en">
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<head>
    <meta charset="utf-8">
    <link rel="stylesheet" href="https://cdn.leafletjs.com/leaflet-0.7/leaflet.css" />
    <link href="//maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet">
    <link rel="stylesheet" href="assets/leaflet_awesome/leaflet_awesome_markers.css">
​
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    <script src="https://cdnjs.cloudflare.com/ajax/libs/leaflet/0.7.3/leaflet.min.js"></script>
    <script src='https://api.tiles.mapbox.com/mapbox.js/v1.6.4/mapbox.js'></script>
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
    <script src="assets/leaflet_awesome/leaflet_awesome_markers.js"></script>
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    <style type="text/css">
    #map {
        width: 600px;
        height: 400px;
    }
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    </style>
</head>
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<body>
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    <div id="map"></div>
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    <script type="text/javascript">
    var mapboxTiles = L.tileLayer('https://{s}.tiles.mapbox.com/v3/examples.map-i87786ca/{z}/{x}/{y}.png', {
        attribution: '<a href="https://www.mapbox.com/about/maps/" target="_blank">Terms &amp; Feedback</a>'
    });
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    //possible colors 'red', 'darkred', 'orange', 'green', 'darkgreen', 'blue', 'purple', 'darkpuple', 'cadetblue'
    var cafeIcon = L.AwesomeMarkers.icon({
        prefix: 'fa', //font awesome rather than bootstrap
        markerColor: 'red', // see colors above
        icon: 'coffee' //https://fortawesome.github.io/Font-Awesome/icons/
    });
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    var map = L.map('map')
        .addLayer(mapboxTiles)
        .setView([42.444508, -76.499491], 12);
​
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    var promise = $.getJSON("businesses.json");
    promise.then(function(data) {
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        var allbusinesses = L.geoJson(data);
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        var cafes = L.geoJson(data, {
            filter: function(feature, layer) {
                return feature.properties.BusType == "Cafe";
            },
            pointToLayer: function(feature, latlng) {
                return L.marker(latlng, {
                    icon: cafeIcon
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                }).on('mouseover', function() {//this is new
                    this.bindPopup(feature.properties.Name).openPopup();
                });
            }
        });
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        var others = L.geoJson(data, {
            filter: function(feature, layer) {
                return feature.properties.BusType != "Cafe";
            },
            pointToLayer: function(feature, latlng) {//this is new
                return L.marker(latlng, {
                    
                }).on('mouseover', function() {//this is new
                    this.bindPopup(feature.properties.Name).openPopup();
                });
            }
        });
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        map.fitBounds(allbusinesses.getBounds(), {
            padding: [50, 50]
        });
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        cafes.addTo(map)
        others.addTo(map)
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    });
    </script>
</body>
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</html>
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