<!DOCTYPE html>
<html lang="zh-cn">
<head>
<meta charset="UTF-8">
<title>Document</title>
<title>Pull to Refresh</title>
<meta name="viewport" content="width=device-width,height=device-height,inital-scale=1.0,maximum-scale=1.0,user-scalable=no;" />
<style>
div{
position: absolute;
top:0px;
bottom:0px;
width:100%;
left:0px;
overflow: hidden;
}
li{
list-style-type: none;
height:35px;
background: gainsboro;
border-bottom: solid 1px #fff;
text-align: left;
line-height: 35px;
padding-left:15px;
}
ul{
width:100%;
margin-top:0px;
position: absolute;
left:0px;
padding:0px;
top:0px;
}
</style>
</head>
<body>
<div class="outerScroller">
<ul class = 'scroll'>
<li>朋友圈1</li>
<li>朋友圈2</li>
<li>朋友圈3</li>
<li>朋友圈4</li>
<li>朋友圈5</li>
<li>朋友圈6</li>
<li>朋友圈7</li>
<li>朋友圈8</li>
<li>朋友圈9</li>
<li>朋友圈10</li>
</ul>
</div>
<script>
var scroll = document.querySelector('.scroll');
var outerScroller = document.querySelector('.outerScroller');
var touchStart = 0;
var touchDis = 0;
outerScroller.addEventListener('touchstart', function(event) {
var touch = event.targetTouches[0];
// 把元素放在手指所在的位置
touchStart = touch.pageY;
console.log(touchStart);
}, false);
outerScroller.addEventListener('touchmove', function(event) {
var touch = event.targetTouches[0];
console.log(touch.pageY + 'px');
scroll.style.top = scroll.offsetTop + touch.pageY-touchStart + 'px';
console.log(scroll.style.top);
touchStart = touch.pageY;
touchDis = touch.pageY-touchStart;
}, false);
outerScroller.addEventListener('touchend', function(event) {
touchStart = 0;
var top = scroll.offsetTop;
console.log(top);
if(top>70)refresh();
if(top>0){
var time = setInterval(function(){
scroll.style.top = scroll.offsetTop -2+'px';
if(scroll.offsetTop<=0)clearInterval(time);
},1)
}
}, false);
function refresh(){
//这里是后台数据
for(var i = 3;i>0;i--)
{
var node = document.createElement("li");
node.innerHTML = "I'm new" + i;
scroll.insertBefore(node,scroll.firstChild);
}
}
</script>
</body>
</html>
