原生js下拉刷新
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<style type="text/css">
body {
font-size: 12px;
-webkit-user-select: none;
-webkit-text-size-adjust: none;
font-family: helvetica;
}
#slideDown {
margin-top: 0;
width: 100%;
}
#slideDown1,
#slideDown2 {
width: 100%;
background: #e9f4f7;
display: none;
}
#slideDown1 {
height: 20px;
}
#slideDown1>p,
#slideDown2>p {
margin: 20px auto;
text-align: center;
font-size: 14px;
color: #37bbf5;
}
#content {
position: absolute;
left: 0;
top: 0;
z-index: 1;
/* -webkit-touch-callout:none;*/
-webkit-tap-highlight-color: rgba(0, 0, 0, 0);
width: 100%;
padding: 0;
}
</style>
</head>
<body>
<div id="content">
<div id="slideDown">
<div id="slideDown1">
<p>松开刷新</p>
</div>
<div id="slideDown2">
<p>正在刷新 ...</p>
</div>
</div>
<div class="myContent">
<ul>
<li>item1 -- item1 -- item1</li>
<li>item2 -- item2 -- item2</li>
<li>item3 -- item3 -- item3</li>
<li>item4 -- item4 -- item4</li>
<li>item5 -- item5 -- item5</li>
<li>item6 -- item6 -- item6</li>
<li>item7 -- item7 -- item7</li>
</ul>
</div>
</div>
<script type="text/javascript">
document.addEventListener('touchmove', function(e) {
e.preventDefault();
}, false);
var flag = true;
//第一步：下拉过程
function slideDownStep1(dist) { // dist 下滑的距离，用以拉长背景模拟拉伸效果
var slideDown1 = document.getElementById("slideDown1"),
slideDown2 = document.getElementById("slideDown2");
slideDown2.style.display = "none";
slideDown1.style.display = "block";
slideDown1.style.height = (parseInt("20px") - dist) + "px";
}
//第二步：下拉，然后松开，
function slideDownStep2() {
var slideDown1 = document.getElementById("slideDown1"),
slideDown2 = document.getElementById("slideDown2");
slideDown1.style.display = "none";
slideDown1.style.height = "20px";
slideDown2.style.display = "block";
//刷新数据
//location.reload();
}
//第三步：刷新完成，回归之前状态
function slideDownStep3() {
var slideDown1 = document.getElementById("slideDown1"),
slideDown2 = document.getElementById("slideDown2");
slideDown1.style.display = "none";
slideDown2.style.display = "none";
flag = true;
}
//下滑刷新调用
k_touch("content", "y");
//contentId表示对其进行事件绑定，way==>x表示水平方向的操作，y表示竖直方向的操作
function k_touch(contentId, way) {
var _start = 0,
_end = 0,
_content = document.getElementById(contentId);
_content.addEventListener("touchstart", touchStart, false);
_content.addEventListener("touchmove", touchMove, false);
_content.addEventListener("touchend", touchEnd, false);
function touchStart(event) {
//var touch = event.touches[0]; //这种获取也可以，但已不推荐使用
if(!flag) {
return false;
}
var touch = event.targetTouches[0];
if(way == "x") {
_start = touch.pageX;
} else {
_start = touch.pageY;
}
}
function touchMove(event) {
if(!flag) {
return false;
}
var touch = event.targetTouches[0];
if(way == "x") {
_end = (_start - touch.pageX);
} else {
_end = (_start - touch.pageY);
//下滑才执行操作
if(_end < 0) {
slideDownStep1(_end);
}
}
}
function touchEnd(event) {
if(flag) {
flag = false;
} else {
return false;
}
if(_end > 0) {
console.log("左滑或上滑 " + _end);
} else {
console.log("右滑或下滑" + _end);
slideDownStep2();
//刷新成功则
//模拟刷新成功进入第三步
setTimeout(function() {
slideDownStep3();
}, 2500);
}
}
}
</script>
</body>
</html>
