mui-scroll区域滑动，可是我怎么知道已近滑动到最后一张图片了，然后加载更多图片了

mui('.mui-scroll-wrapper').scroll({  
    deceleration: 0.0005 ,//flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006   
});  

<section>
<div class="mui-scroll-wrapper mui-slider-indicatorcode mui-segmented-control mui-segmented-control-inverted">
<div class="mui-scroll" >
<div class="demo1" id="demo2">
<img class="img" src="../../img/1.jpg"/>
<img class="img" src="../../img/2.png"/>
<img class="img" src="../../img/3.jpg"/>
<img class="img" src="../../img/4.jpg"/>
<img class="img" src="../../img/5.jpg"/>
<img class="img" src="../../img/1.jpg"/>
<img class="img" src="../../img/2.png"/>
<img class="img" src="../../img/3.jpg"/>
<img class="img" src="../../img/4.jpg"/>
<img class="img" src="../../img/5.jpg"/>
</div>
</div>
</div>
</section>

我滑动到最后一张图片，然后向服务器请求加载更多图
可是我怎么知道已近滑动到最后一张图片了