jQuery nodetype filter: Filter the selected elements by nodeType

jquery.ba-nodetype.js

/*!
 * jQuery nodetype filter - v0.1pre - 11/18/2010
 * http://benalman.com/
 * 
 * Copyright (c) 2010 "Cowboy" Ben Alman
 * Dual licensed under the MIT and GPL licenses.
 * http://benalman.com/about/license/
 */

(function($){
  
  var types = {
    element: 1,
    text: 3,
    comment: 8,
    document: 9
  };
  
  $.fn.nodetype = function( type ) {
    var type = typeof type === "string" ? types[ type.toLowerCase() ] : type;
    
    return this.pushStack( this.filter(function(){
      return this.nodeType === type;
    }), "nodetype", type );
  };
  
})(jQuery);

Oh yeah, right... I remember having a big discussion in #jquery-dev about how the implicit nodeType === 1 really limits jQuery custom selectors :/

hey @cowboy, not sure if this code is relevant anymore, but out of curiosity, could you just pass types like Node.TEXT_NODE and Node.ELEMENT_NODE instead of using that artificial enumeration?