why rails-4 application doesn't care about delegate event for bind ajax ckeditor each time ?

application.js

// try it... but after the first call and cancel, the second call show that it serve nothing...
$(document).on('click', 'form[data-remote]', function(){
    for (instance in CKEDITOR.instances){
      CKEDITOR.instances[instance].updateElement(); } });

//  try this... still doesn't change, still failed to load ckeditor on second call AJAX edition
$(document).on('ajax:before', 'form[data-remote]', function(){
    for (instance in CKEDITOR.instances){
      CKEDITOR.instances[instance].updateElement(); } });