Javascript iScroll.js垂直滚动在移动设备上不工作

我正在使用iScroll.js水平滚动一些图像， 但由于某些原因，我无法在iPhone上垂直滚动，或者iPad在桌面上工作正常

<div class="container-fluid projects" id="projects">
  <div id="wrapper">
    <div id="scroller">
      <ul id="thelist">
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image:     url(https://placehold.it/350x150)">
          </div>
        </li>
      </ul>
    </div>
  </div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/iScroll/5.2.0/iscroll.min.js">    </script>

<div class="test">
</div>

这是我的代码和代码笔的链接

<div class="container-fluid projects" id="projects">
  <div id="wrapper">
    <div id="scroller">
      <ul id="thelist">
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image:     url(https://placehold.it/350x150)">
          </div>
        </li>
      </ul>
    </div>
  </div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/iScroll/5.2.0/iscroll.min.js">    </script>

<div class="test">
</div>

HTML

<div class="container-fluid projects" id="projects">
  <div id="wrapper">
    <div id="scroller">
      <ul id="thelist">
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image:     url(https://placehold.it/350x150)">
          </div>
        </li>
      </ul>
    </div>
  </div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/iScroll/5.2.0/iscroll.min.js">    </script>

<div class="test">
</div>

JS

<div class="container-fluid projects" id="projects">
  <div id="wrapper">
    <div id="scroller">
      <ul id="thelist">
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image: url(https://placehold.it/350x150)">
          </div>
        </li>
        <li class="child">
          <div class="photo" style="background-image:     url(https://placehold.it/350x150)">
          </div>
        </li>
      </ul>
    </div>
  </div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.4/jquery.min.js"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/iScroll/5.2.0/iscroll.min.js">    </script>

<div class="test">
</div>

//快走，这是私人聚会
（功能（文档、窗口）{
//DOM节点和对象实例
变量$thelist、$thelistChilds、$wrapper、myScroll、loaded；
//数值变量
var i=0，
左=0；
//加载DOM后执行
已加载=函数（）{
//将左键指定给每个子项
$thelist=document.getElementById（'thelist'）；
$thelistChilds=$thelist.Childs；
对于（i=0；i<$thelistChilds.length；i++）{
左+=12.5；
$thelistChilds[i].style.left=left+rem；
};
//设置iScroll
$wrapper=document.getElementById（'wrapper'）；
myScroll=新的IScroll（$wrapper{
“滚动条”：“自定义”，
“鼠标轮”：正确，
“反弹”：没错，
“interactiveScrollbars”：true，
“eventPassthrough”：true，
“scrollX”：对，
“卷轴”：对，
“eventPassthrough”：true，
“单击”：true，
"tap":对
});
}
//如果是触摸屏
如果（'ontouchstart'在窗口中）{
//避免浏览器屏幕反弹
文档.添加的事件列表器（'touchmove'，函数（e）{
e、 预防默认值（）；
}，假）；
};
//设置DOM就绪
document.addEventListener（'DOMContentLoaded'，loaded，false）；
})（文件，窗口）；