<% var rand = Math.random().toString(16).split('.')[1]; %>

New Style or Source

Style

Use CartoCSS to style vector tiles. Pick a starter style or choose your own vector tile source.
<% _(obj.style).chain().toArray().each(function(item, i) { %> <%- item.name || 'Basic' %> <% }); %>
To use a composite source, string together comma-separated map IDs. Accepts TileJSON URLs for sources not hosted by Mapbox.

Source

Create custom vector tiles
Blank source