View file Web Template Ktpl/package/templates/ktpl/controllers/comments/backend/text_edit.tpl.php

<div id="comments_edit_form" class="modal_form">
    <form action="<?php echo $action; ?>" method="post" class="modal">
        <?php echo html_csrf_token(); ?>
        <?php echo html_input('hidden', 'save', 1); ?>
        <div class="field" id="f_content"><?php echo html_editor('content', $comment['content']); ?></div>
        <div class="buttons">
            <?php echo html_submit(LANG_SAVE); ?>
        </div>
    </form>
</div>
<script type="text/javascript">
    $(function (){
        $('#comments_edit_form form').on('submit', function (){
            return icms.forms.submitAjax(this);
        });
    });
    function successSaveComment (form, result){
        $('#'+result.comment_id+' .comment_text_edit').html(result.text);
        icms.modal.close();
    }
</script>