The following code is based on Angus Croll blog post "Fixing the JavaScript typeof operator" (http://javascriptweblog.wordpress.com/2011/08/08/fixing-the-javascript-typeof-operator).

gistfile1.js

(function ( global, undefined ) {
  "use strict";
  var type = function ( objects, types, output ) {
    var keyMap, result, testObjects, testTypes,
    getType = function ( object ) {
      if ( object && object.nodeType !== undefined ) {
        return 'dom';
      }
      else if ( object === global ) {
        return 'global';
      }
      else {
        return ({}).toString.call( object )
          .match( /\s([a-zA-Z]+)/ )[1].toLowerCase();
      }
    };

    testObjects = getType( objects );
    testTypes   = getType( types );

    if ( testTypes !== 'undefined' ) {
      if ( testTypes === 'string' ) {
        return testObjects === types;
      }
      else if ( testTypes === 'array' ) {
        if ( output === 'array' ) {
          return objects.map(function ( member, index ) {
            return getType( member ) === types[index];
          });
        }
        else if ( getType( output ) === 'string' ) {
          result = {};
          keyMap = output.split(/,\s?|\s+/);
          objects.forEach(function ( member, index ) {
            result[ keyMap[index] || member ] = {
              'objectType': getType( member ),
              'testFor': types[index],
              'result': getType( member) === types[index]
            };
          });
          return result;
        }
        else {
          return objects.every(function ( member, index ) {
            return getType( member ) === types[index];
          });
        }
      }
    }
    return testObjects;
  };

  //Reveal to the global scope
  Object.type = type;
}( this, undefined ));

gistfile2.js

(function ( global, undefined ) {
  "use strict";
  //Testing scenarios for the JSdot library
  //type.js
  var debug, objects = [null, 0, undefined, new Date(), new XMLHttpRequest(), (function () {}), {}, [], 'string'],
      keys = 'nullify, none,,now getServer,,objective,stopArray,words',
      matches = ['null', 'number', 'undefined', 'date', 'xmlhttprequest', 'function', 'object', 'array', 'string'],
      misses = ['array', 'number', 'string', 'date', 'xmlhttprequest', 'function', 'object', 'number', 'string'];

  debug = {
    "objects array: ": objects,
    "matches array: ": matches,
    "misses array: ": misses,
    "Object.type( {} )": Object.type( {} ),
    "Object.type( 2013, 'number' )": Object.type( 2013, 'number' ),
    "Object.type( objects, matches )": Object.type( objects, matches),
    "Object.type( objects, misses )": Object.type( objects, misses ),
    "Object.type( objects, matches, keys )": Object.type( objects, matches, keys ),
    "Object.type( objects, matches, 'array' )": Object.type( objects, matches, 'array' ),
    "Object.type( objects, misses, keys )": Object.type( objects, misses, keys ),
    "Object.type( objects, misses, 'array' )": Object.type( objects, misses, 'array' )
  };

  Object.debug = debug;
}( this, undefined ));