Drill down US map

The following example demonstrates implementation of drill down map. Click on the state shows map of this state's counties. Note that county maps are loaded on demand.

Full code of an example:

$(function(){
  new jvm.MultiMap({
    container: $('#map'),
    maxLevel: 1,
    main: {
      map: 'us_lcc'
    },
    mapUrlByCode: function(code, multiMap){
      return '/js/us-counties/jquery-jvectormap-data-'+
             code.toLowerCase()+'-'+
             multiMap.defaultProjection+'-en.js';
    }
  });
});