 on the TileJSON. Set to <code>false</code> to disable the <code><a href="/mapbox.js/api/v2.2.4/l-mapbox-featurelayer">L.mapbox.featureLayer</a></code>.</li><li><code>gridLayer</code> <code><a href="/mapbox.js/api/v2.2.4/l-mapbox-gridlayer">L.mapbox.gridLayer</a></code>. Options passed to a <code><a href="/mapbox.js/api/v2.2.4/l-mapbox-gridlayer">L.mapbox.gridLayer</a></code> based on the TileJSON. Set to <code>false</code> to disable the <code><a href="/mapbox.js/api/v2.2.4/l-mapbox-gridlayer">L.mapbox.gri