基于iScroll实现下拉刷新和上滑加载效果

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：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。