JavaScript: namespace helper

namespace.js

function namespace(name)
{
	var namespaces = name.split(".");
	var name = "";

	function getName(parent)
	{
		if(namespaces.length > 0)
		{
			name = namespaces.shift();

			if(!parent[name])
			{
				parent[name] = {}
			}

			return getName(parent[name], namespaces)
		}
		else
		{
			return parent;
		}
	}
	return getName(window);
}

Just some insights for a shorter version:

function ns( ns )
{
  var i, b = window;
  for(i in (ns = ns.split('.')))
    b = (b[ns[i]] || (b[ns[i]] = {}))
  return b
}

Some functional code this time:

function ns( ns, base )
{
  var n, b = base || window, r = /[^\.]+/g;
  while( (n = r.exec( ns ) ) != null )
    b = b[n[0]] || (b[n[0]] = {});
   return b;
}

Testing (at window)

ns( 'a.b.c.d.e'  );

console.log( window.a );
console.log( window.a.b );
console.log( window.a.b.c );
console.log( window.a.b.c.d );
console.log( window.a.b.c.d.e );

More (custom base)

var app = {}
ns( 'a.b.c.d.e', app );

console.log( app.a );
console.log( app.a.b );
console.log( app.a.b.c );
console.log( app.a.b.c.d );
console.log( app.a.b.c.d.e );