form 동적생성

$('#btn_submit').click( function() {

var $form = $('<form></form>');
$form.attr('action', '/insert.do');
$form.attr('method', 'post');
$form.attr('target', 'ifrm_1');
$form.appendTo('body');
 

var idx = $('<input type="hidden" value="<%=idx%>" name="idx">');
 var key= $('<input type="hidden" value="<%=key%>" name="key">');

         $form.append(idx).append(key);

$form.submit();

});