Leaflet fail

<html>
<head>

<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet-0.7.5/leaflet.css" />
<script src="http://cdn.leafletjs.com/leaflet-0.7.5/leaflet.js"></script>
<script src='https://code.jquery.com/jquery-1.11.0.min.js'></script>

<style type="text/css">
#map {
height:100%;
}
</style>

</head>
<body>

<div id="map"></div>

<script type="text/javascript">

var tractstyle = {
    "fillColor": "red",
    "color": "white",
    "dashArray": 0,
    "weight": 1,
    "opacity": .5
    };

var map = L.map("map", {
        center: [38.9061305,-77.0393977],
        zoom: 12,
        minZoom: 2
        });
        mapLink = '<a href="http://cartodb.com/basemaps">';

L.tileLayer('http://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', {
    attribution: '&copy; ' + mapLink + 'Map tiles by CartoDB, under CC BY 3.0. Data by OpenStreetMap, under ODbL',
}).addTo(map);

var censustracts = L.geoJson("tractsedited.geojson").addTo(map);


</script>

</body>
</html>