这个地方如何实现的

<br>self.on('panel_showed', function (e, showDetail) {<br>        var hasGet = false, unreadsData;<br>        self.resetPosition();<br>        // 显示面板内容<br>        if (unreads !== 0) {<br>          self.getUnreads(self.showListCbWrap(function (err, data, loading) {<br>              unreads = 0;<br>              unreadsData = data.data;<br>          }));<br>          hasGet = true;<br>        }<br>        if (!hasReadedItems) {<br>          $('.notice_content', self.Dom.wrap).empty();<br>          self.getAllReaded(self.showListCbWrap(function (err, data, loading) {<br>            hasReadedItems = true;<br>          }));<br>          hasGet = true;<br>        }<br>        if (hasGet) {<br>          self.Dom.wrap.one('list_showed', function (e, err) {<br>            if (err) {<br>              self.error(err);<br>            } else {<br>              if(showDetail) {<br>                var unreadsItem = $('.notice_list_con .unread', self.Dom.wrap);<br>                if(unreadsItem.length === 1) {<br>                  unreadsItem.trigger('click');<br>                }<br>              }<br>              if (unreadsData && unreadsData.length > 0) {<br>                keepUnread = true;<br>                setTimeout(function() {<br>                  self.setReaded(unreadsData);<br>                }, 1000);<br>              }<br>            }<br>          });<br>        }<br>      }).on('detail_showed', function (e, detail, index) {<br>        // 显示通知详情<br>        $('.detail_con .prvnote', self.Dom.wrap).toggleClass('disabled', !(index > 0));<br>        $('.detail_con .nextnote', self.Dom.wrap).toggleClass('disabled', !detail.next()[0]);<br>        if (!detail.data('loaded') && !$('dd', detail)[0] && !$('.empty:visible', detail)[0] && !$('.loading:visible', detail)[0]) {<br>          self.getDetail(detail);<br>        }<br>      }).on('tip_showing', function () {<div class="clear">
                 
              
              
        
            </div>