求教H5页面上拉加载更多的问题

<div id="wrapper"><ul>			{foreach from=$deal_list item="deal" key=key name="deal" length="5" }<li><div>  {if $deal.warrant eq 1}  <div></div>  {elseif $deal.warrant eq 2}  <div></div>  {/if}</div><span >{$deal.borrow_amount}</span><span >{$deal.format}</span></li>{/foreach}	</ul></div>

<script type="text/javascript">refresher.init({	id:"wrapper",	pullDownAction:Refresh,                                                            	pullUpAction:Load 																			});																																							function Refresh() {																	setTimeout(function () {	// <-- Simulate network congestion, remove setTimeout from production!		var el, li, i;																				el =document.querySelector("#wrapper ul");							//这里写刷新代码						document.getElementById("wrapper").querySelector(".pullDownIcon").style.display="none";				document.getElementById("wrapper").querySelector(".pullDownLabel").innerHTML="<img  src='{$TMPL}/images/ok.png'/ alt="求教H5页面上拉加载更多的问题" >刷新成功";																					 		setTimeout(function () {			wrapper.refresh();			document.getElementById("wrapper").querySelector(".pullDownLabel").innerHTML="";											},500);	}, 2000);}function Load() {	setTimeout(function () {// <-- Simulate network congestion, remove setTimeout from production!		var el, li, i;		el =document.querySelector("#wrapper ul");		for (i=0; i<3; i++) {			li = document.createElement('li');	                        li.innerHTML='8888888';	el.appendChild(li, el.childNodes[0]);		}		wrapper.refresh();	},3000);	}</script>