在HTML中的移动网页浏览器上下拉刷新

var PullToRefresh= function(callback, wrapper, instructionsText) {

   //It creates dom elements and append them before content wrapper  
   
   // <div class="mainWrapper" style="overflow: scroll; height: 600px;">
   <div class="pullToReloadWrapper"></div><div class = "contentWrapper"></div>
   </div> is the markup.
   
   // if main wrapper&#39;s height is > than content wrapper&#39;s
   height, then change the main wrapper height to be the height of the content wrapper.
   
   // scroll main wrapper.
   // invoke initializeEvents() to inititalize the events
};