D3 Examples - Leaflet.js Tips, Step 3 (markers and fitBounds)

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<!DOCTYPE html>
<html lang="en">
​
<head>
    <meta charset="utf-8">
    <link rel="stylesheet" href="https://cdn.leafletjs.com/leaflet-0.7/leaflet.css" />
    <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>
    <!-- THIS IS NEW -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
    <style type="text/css">
    #map {
        width: 600px;
        height: 400px;
    }
    </style>
</head>
​
<body>
    <div id="map"></div>
​
    <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>'
    });
​
    var map = L.map('map')
        .addLayer(mapboxTiles)
        .setView([42.444508, -76.499491], 12);
​
    
    var promise = $.getJSON("businesses.json");
    promise.then(function(data) {
​
        // THIS IS NEW
        var allbusinesses = L.geoJson(data);
        allbusinesses.addTo(map);
​
        // THIS IS NEW
        map.fitBounds(allbusinesses.getBounds(), {
            padding: [50, 50]
        });
    });
    </script>
</body>
</html>
​
    