jquery - Dynamically Modify $.post url -

can $.post mirror action='' of form?

i don't want make multiple $.post functions, action='' changes user selects he/she wants submit in menu system. so, need 1 $.post function if url changes dynamically action='' does.

$("#txtrform").submit(function(){      $.post('{*action*#txtrform}', $("#txtrform").serialize(), function(data) {         $("#col3").load("/include/txtrpbox/feed.php");         $('input#txtrinput').val('');     });      return false;        }); 

$("#txtrform").submit(function(){      $.post($(this).attr('action'), $(this).serialize(), function(data) {       ...     });      return false;        });