<div id="pullUp"&gt;
    <span class="pullUpLabel" style="text-align: center;"&gt;上拉加载...</span>
  </div>
</div>

function loaded() {
pullDownEl = document.getElementById('pullDown');
pullDownOffset = pullDownEl.offsetHeight;
pullUpEl = document.getElementById('pullUp');
pullUpOffset = pullUpEl.offsetHeight;
myScroll = new iScroll('wrapper',{
useTransition: false,topOffset: pullDownOffset,btnOffset: pullUpOffset,hideScrollbar: true,fadeScrollbar: true,onRefresh: function () {
if (pullDownEl.className.match('loading')) {
pullDownEl.className = '';
//pullDownEl.querySelector('.pullDownLabel').innerHTML = '下拉刷新...';
pullDownEl.querySelector('.pullDownLabel').innerHTML = '数据更新时间：' + updateDatetime;
} else if (pullUpEl.className.match('loading')) {
pullUpEl.className = '';
pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载...';
}
},onScrollMove: function () {
if (this.y > 5 && !pullDownEl.className.match('flip')) {
pullDownEl.className = 'flip';
//pullDownEl.querySelector('.pullDownLabel').innerHTML = '释放刷新...';
pullDownEl.querySelector('.pullDownLabel').innerHTML = '数据更新时间：' + updateDatetime;
this.minScrollY = 0;
} else if (this.y < 5 && pullDownEl.className.match('flip')) {
pullDownEl.className = '';
//pullDownEl.querySelector('.pullDownLabel').innerHTML = '下拉刷新...';
pullDownEl.querySelector('.pullDownLabel').innerHTML = '数据更新时间：' + updateDatetime;
this.minScrollY = -pullDownOffset;
} else if (this.y < (this.maxScrollY - pullUpOffset - 40) && !pullUpEl.className.match('flip')) {
pullUpEl.className = 'flip';
pullUpEl.querySelector('.pullUpLabel').innerHTML = '释放加载...';
this.maxScrollY = this.maxScrollY - pullUpOffset;
}
//else if (this.y > (this.maxScrollY - pullUpOffset) && pullUpEl.className.match('flip')) {
// pullUpEl.className = '';
// pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载...';
// //this.maxScrollY = pullUpOffset;
//}
},onScrollEnd: function () {
if (pullDownEl.className.match('flip')) {
pullDownEl.className = 'loading';
//pullDownEl.querySelector('.pullDownLabel').innerHTML = '数据刷新中...';
pullDownEl.querySelector('.pullDownLabel').innerHTML = '数据更新时间：' + updateDatetime;
myScroll.refresh();
} else if (pullUpEl.className.match('flip')) {
pullUpEl.className = 'loading';
pullUpEl.querySelector('.pullUpLabel').innerHTML = '数据加载中...';
setTimeout(function () { myScroll.refresh(); },3000);

}
}
});
}
document.addEventListener('touchmove',function (e) { e.preventDefault(); },false);
document.addEventListener('DOMContentLoaded',function () { setTimeout(loaded,200); },false);