A improved type verification function that avoid problems with instanceof and typeof, works with literals and across frames for JavaScript natives objects only

isType.js

/**
 * A improved type verification function that avoid problems with instanceof and typeof, works with literals and across frames
 * for JavaScript natives objects only
 * 
 * @author   Pedro Sanção <dev at sancao dot co>
 * @license  GNU GPL v2
 *
 * @see http://stackoverflow.com/questions/203739/why-does-instanceof-return-false-for-some-literals?rq=1
 * @see http://stackoverflow.com/questions/14391506/instanceof-operator-fails-when-passing-an-object-through-windows
 */

function isType(value, object) {
	return Object.prototype.toString.call(value) === '[object ' + object.name + ']';
}

isType([], Array); // true
isType([], Object); // false
isType({}, Object); // true
isType('', String); // true
isType(false, Boolean); // true
isType('', Boolean); // false
isType(document.createElement('div'), HTMLDivElement); // true

// and so on