Not that it actually matters much[1] but as you insist very much on performance here a benchmark http://www.navioo.com/ajax/examples/json/test.php http://www.n

Not that it actually matters much[1] but as you insist very much on performance here a benchmark http://www.navioo.com/ajax/examples/json/test.php http://www.navioo.com/ajax/examples/json/test.php In the first example XML actually is a tad faster, in the second example it is practically a tie (JSON wins by three or four milliseconds). [1] Are we seriously arguing about milliseconds when it comes to document parsing?