simple namespace function

ns.js

// simple namespace function
// use: var newNs = namespace('this.is.a.new.namespace');

var namespace = function(namespace, context) {
  
  if (!namespace) { throw 'namespace string is required' };
  
  var ns = namespace.split('.');
  var current = context || this;
  
  for (var k in ns) {
    
    if (!current[ns[k]]) {
      current[ns[k]] = {};
    }
    
    current = current[ns[k]];
    
  }
  
  return current;
  
};

console.log(namespace('fei.liu.fl'));