To load our data/layers that we've styled via Tilemill, we can use the mapbox javascript library (separate from leaflet) to make a map.

Unlike the other example where we needed to use a project ID, we can use the ID of the DATA (from the DATA tab at mapbox.com). Note the "mapbox" in the function name below, compared to the L.map function in the other example.

Notice there is no basemap since i've commented out the CSS code to make the map appear in tilemill. It's just the data layers (bike paths and public art) that I loaded into TileMill.