Simple GeoJSON filter example in Leaflet, using external data

by marcus211

HTML

<script src="//cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js"></script>
<link rel="stylesheet" href="//cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css">
<div id="map"></div>

CSS

html,
body,
#map {
  height: 100%;
  width: 100%;
  padding: 0px;
  margin: 0px;
}

JavaScript

/////////////////////////////////////////////////////////////////////////////////////////////
//setting up the map//
/////////////////////////////////////////////////////////////////////////////////////////////
var map = L.map('map').setView([40, -102], 4);
ATTR = '&copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, ' +
  '<a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a> | ' +
  '&copy; <a href="http://cartodb.com/attributions">CartoDB</a>';
CDB_URL = 'http://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png';
L.tileLayer(CDB_URL, {
  attribution: ATTR
}).addTo(map);

/////////////////////////////////////////////////////////////////////////////////////////////
//adding data//
/////////////////////////////////////////////////////////////////////////////////////////////
var contour = $.getJSON("https://dl.dropbox.com/s/ztt748q6kj8s3z9/states.json", function(data) {
  var myStyle = {
    "color": "#ff7800",
    "weight": 2,
    "opacity": 0.65
  };
  L.geoJson(data, {
    style: myStyle
  }).addTo(map);

});