基于iScroll实现下拉刷新和上滑加载效果

所属分类：网络编程 / JavaScript 阅读数： 1367

收藏 0赞 0分享

本文实例为大家分享了iScroll下拉刷新上滑加载展示的具体代码，供大家参考，具体内容如下

html代码：

<!DOCTYPE html> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 
<meta name="viewport" content="width=device-width; initial-scale=1.0; maximum-scale=1.0;" /> 
<title>iScroll下拉刷新上滑加载</title> 
<link rel="stylesheet" href="style/main.css"/> 
</head> 
<body> 
 
<div class="header">header</div> 
<div id="wrapper"> 
 <div id="scroller"> 
 <div id="pullDown"> 
  <span class="pullDownLabel">下拉刷新</span> 
 </div> 
 <ul id="thelist"> 
  <!--<li>原始数据</li>--> 
 </ul> 
 <div id="pullUp"> 
  <span class="pullUpLabel">上拉加载更多</span> 
 </div> 
 </div> 
</div> 
<div class="footer">footer</div> 
 
<script type="text/javascript" src="script/iscroll.js"></script> 
<script type="text/javascript" src="script/main.js"></script> 
 
</body> 
</html>

css代码：

body,ul,li {padding:0;margin:0;border:0} 
body {font-size:12px;font-family:microsoft yahei} 
 
.header {position:absolute;top:0; left:0;width:100%;height:45px;line-height:45px;font-size:16px;text-align:center;background:#e6e6e6} 
.footer {position:absolute;bottom:0; left:0;width:100%;height:48px;line-height:48px;font-size:16px;text-align:center;background:#e6e6e6} 
 
#wrapper {position:absolute;top:45px; bottom:48px;left:0;width:100%} 
#scroller li {padding:0 10px;height:60px;line-height:60px;background:#ecf6ff;margin-top:10px} 
#pullDown, #pullUp {padding:0 10px;height:30px;line-height:30px;color:#888;text-align:center}

js代码：

var myScroll,pullDownEl, pullDownOffset,pullUpEl, pullUpOffset,generatedCount = 0; 
 
function loaded() { 
 //动画部分 
 pullDownEl = document.getElementById('pullDown'); 
 pullDownOffset = pullDownEl.offsetHeight; 
 pullUpEl = document.getElementById('pullUp'); 
 pullUpOffset = pullUpEl.offsetHeight; 
 myScroll = new iScroll('wrapper', { 
 useTransition: true, 
 topOffset: pullDownOffset, 
 onRefresh: function () { 
  if (pullDownEl.className.match('loading')) { 
  pullDownEl.className = ''; 
  pullDownEl.querySelector('.pullDownLabel').innerHTML = '下拉刷新'; 
  } else if (pullUpEl.className.match('loading')) { 
  pullUpEl.className = ''; 
  pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多'; 
  } 
 }, 
 onScrollMove: function () { 
  
  if (this.y > 5 && !pullDownEl.className.match('flip')) { 
  pullDownEl.className = 'flip'; 
  pullDownEl.querySelector('.pullDownLabel').innerHTML = '释放刷新'; 
  this.minScrollY = 0; 
  } else if (this.y < 5 && pullDownEl.className.match('flip')) { 
  pullDownEl.className = ''; 
  pullDownEl.querySelector('.pullDownLabel').innerHTML = 'Pull down to refresh...'; 
  this.minScrollY = -pullDownOffset; 
  } else if (this.y < (this.maxScrollY - 5) && !pullUpEl.className.match('flip')) { 
  pullUpEl.className = 'flip'; 
  pullUpEl.querySelector('.pullUpLabel').innerHTML = '释放刷新'; 
  this.maxScrollY = this.maxScrollY; 
  } else if (this.y > (this.maxScrollY + 5) && pullUpEl.className.match('flip')) { 
  pullUpEl.className = ''; 
  pullUpEl.querySelector('.pullUpLabel').innerHTML = 'Pull up to load more...'; 
  this.maxScrollY = pullUpOffset; 
  } 
 }, 
 onScrollEnd: function () { 
  if (pullDownEl.className.match('flip')) { 
  pullDownEl.className = 'loading'; 
  pullDownEl.querySelector('.pullDownLabel').innerHTML = '加载中';   
  pullDownAction(); // Execute custom function (ajax call?) 
  } else if (pullUpEl.className.match('flip')) { 
  pullUpEl.className = 'loading'; 
  pullUpEl.querySelector('.pullUpLabel').innerHTML = '加载中';   
  pullUpAction(); // Execute custom function (ajax call?) 
  } 
 } 
 }); 
 
 loadAction(); 
} 
document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);//阻止冒泡 
document.addEventListener('DOMContentLoaded', function () { setTimeout(loaded, 0); }, false); 
 
//初始状态，加载数据 
function loadAction(){ 
 var el, li; 
 el = document.getElementById('thelist'); 
 for (i=0; i<10; i++) { 
 li = document.createElement('li'); 
 li.innerText = '初始数据--' + (++generatedCount); 
 el.appendChild(li, el.childNodes[0]); 
 } 
 myScroll.refresh(); 
} 
 
//下拉刷新当前数据 
function pullDownAction () { 
 setTimeout(function () { 
 //这里执行刷新操作 
  
 myScroll.refresh(); 
 }, 400); 
} 
 
//上拉加载更多数据 
function pullUpAction () { 
 setTimeout(function () { 
 var el, li; 
 el = document.getElementById('thelist'); 
 for (i=0; i<10; i++) { 
  li = document.createElement('li'); 
  li.innerText = '上拉加载--' + (++generatedCount); 
  el.appendChild(li, el.childNodes[0]); 
 } 
 myScroll.refresh(); 
 }, 400); 
}

示例：

demo地址：http://test.ixiewei.com/iscroll-4-demo

下载地址：iScroll下拉刷新上滑加载

截图：