<div class="aw-mod-body"> <span id="file_uploader_question"></span> <span class="aw-text-color-999 aw-upload-tips hide"><?php _e('允许的附件文件类型'); ?>: <?php echo get_setting('allowed_upload_types'); ?></span> <div id="markItUpPreviewFrame" class="markItUpPreviewFrame"> <h2 class="title"> <?php _e('预览模式'); ?>: </h2> <div id="markItUpPreviewFrames" class="markItUpPreviewFrames"></div> </div> </div>请问,页面中”上传附件“Button对应的实现代码在哪里?这里的代码是否做过处理,为啥找不到.click(),以及对应的JS函数?