iScroll下拉刷新上滑加载

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);
}