基于iscroll.js实现下拉刷新和上拉加载效果
来源:互联网 发布:刘嘉玲网络云盘 编辑:程序博客网 时间:2024/06/06 00:57
现在已经不是纯Android独霸天下的时代了,H5嵌入Android的Hybrid混合开发是大势所趋。今天给大家带来的就是移动端中常见的“上拉刷新,下拉加载”特效,这个特效将会基于H5来实现。 借助iScroll插件 兼容性也能很好的实现(包括安卓跟IOS)
在看文章之前请先阅读iScroll那篇文章方便更好的理解实现的过程 用的是4.2.5版本
<!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, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0"
>
<
meta
name
=
"apple-mobile-web-app-capable"
content
=
"yes"
>
<
meta
name
=
"apple-mobile-web-app-status-bar-style"
content
=
"black"
>
<
title
>iScroll 实例:下拉刷新,滚动翻页</
title
>
<
style
type
=
"text/css"
media
=
"all"
>
body,ul,li {
padding:0;
margin:0;
border:0;
}
body {
font-size:12px;
-webkit-user-select:none;
-webkit-text-size-adjust:none;
font-family:helvetica;
}
#header {
position:absolute;
top:0; left:0;
width:100%;
height:45px;
line-height:45px;
background-image:-webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #fe96c9), color-stop(0.05, #d51875), color-stop(1, #7b0a2e));
background-image:-moz-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);
background-image:-o-linear-gradient(top, #fe96c9, #d51875 5%, #7b0a2e);
padding:0;
color:#eee;
font-size:20px;
text-align:center;
}
#header a {
color:#f3f3f3;
text-decoration:none;
font-weight:bold;
text-shadow:0 -1px 0 rgba(0,0,0,0.5);
}
#footer {
position:absolute;
bottom:0; left:0;
width:100%;
height:48px;
background-image:-webkit-gradient(linear, 0 0, 0 100%, color-stop(0, #999), color-stop(0.02, #666), color-stop(1, #222));
background-image:-moz-linear-gradient(top, #999, #666 2%, #222);
background-image:-o-linear-gradient(top, #999, #666 2%, #222);
padding:0;
border-top:1px solid #444;
}
#wrapper {
position:absolute; z-index:1;
top:45px; bottom:48px; left:0;
width:100%;
background:#555;
overflow:auto;
}
#scroller {
position:relative;
/* -webkit-touch-callout:none;*/
-webkit-tap-highlight-color:rgba(0,0,0,0);
float:left;
width:100%;
padding:0;
}
#scroller ul {
position:relative;
list-style:none;
padding:0;
margin:0;
width:100%;
text-align:left;
}
#scroller li {
padding:0 10px;
height:40px;
line-height:40px;
border-bottom:1px solid #ccc;
border-top:1px solid #fff;
background-color:#fafafa;
font-size:14px;
}
#scroller li > a {
display:block;
}
/**
*
* 下拉样式 Pull down styles
*
*/
#pullDown, #pullUp {
background:#fff;
height:40px;
line-height:40px;
padding:5px 10px;
border-bottom:1px solid #ccc;
font-weight:bold;
font-size:14px;
color:#888;
}
#pullDown .pullDownIcon, #pullUp .pullUpIcon {
display:block; float:left;
width:40px; height:40px;
background:url(pull-icon@2x.png) 0 0 no-repeat;
-webkit-background-size:40px 80px; background-size:40px 80px;
-webkit-transition-property:-webkit-transform;
-webkit-transition-duration:250ms;
}
#pullDown .pullDownIcon {
-webkit-transform:rotate(0deg) translateZ(0);
}
#pullUp .pullUpIcon {
-webkit-transform:rotate(-180deg) translateZ(0);
}
/**
* 动画效果css3代码
*/
#pullDown.flip .pullDownIcon {
-webkit-transform:rotate(-180deg) translateZ(0);
}
#pullUp.flip .pullUpIcon {
-webkit-transform:rotate(0deg) translateZ(0);
}
#pullDown.loading .pullDownIcon, #pullUp.loading .pullUpIcon {
background-position:0 100%;
-webkit-transform:rotate(0deg) translateZ(0);
-webkit-transition-duration:0ms;
-webkit-animation-name:loading;
-webkit-animation-duration:2s;
-webkit-animation-iteration-count:infinite;
-webkit-animation-timing-function:linear;
}
@-webkit-keyframes loading {
from { -webkit-transform:rotate(0deg) translateZ(0); }
to { -webkit-transform:rotate(360deg) translateZ(0); }
}
</
style
>
</
head
>
<
body
>
<
div
id
=
"header"
>
<
a
href
=
"../db.html#page2"
>iScroll实例:下拉刷新,滚动翻页</
a
>
</
div
>
<
div
id
=
"wrapper"
>
<
div
id
=
"scroller"
>
<
div
id
=
"pullDown"
>
<
span
class
=
"pullDownIcon"
></
span
><
span
class
=
"pullDownLabel"
>下拉刷新...</
span
>
</
div
>
<
ul
id
=
"thelist"
>
<
li
>我是三冰 1</
li
>
<
li
>我是三冰 2</
li
>
<
li
>我是三冰 3</
li
>
<
li
>我是三冰 4</
li
>
<
li
>我是三冰 5</
li
>
<
li
>我是三冰 6</
li
>
<
li
>我是三冰 7</
li
>
<
li
>我是三冰 8</
li
>
<
li
>我是三冰 9</
li
>
<
li
>我是三冰 10</
li
>
<
li
>我是三冰 11</
li
>
<
li
>我是三冰 12</
li
>
<
li
>我是三冰 13</
li
>
</
ul
>
<
div
id
=
"pullUp"
>
<
span
class
=
"pullUpIcon"
></
span
><
span
class
=
"pullUpLabel"
>上拉加载更多...</
span
>
</
div
>
</
div
>
</
div
>
<
div
id
=
"footer"
></
div
>
<
script
type
=
"application/javascript"
src
=
"iscroll.js"
></
script
>
<
script
type
=
"text/javascript"
>
var myScroll,
pullDownEl, pullDownOffset,
pullUpEl, pullUpOffset,
generatedCount = 0;
/**
* 下拉刷新 (自定义实现此方法)
* myScroll.refresh(); // 数据加载完成后,调用界面更新方法
*/
function pullDownAction () {
setTimeout(function () { // <-- Simulate network congestion, remove setTimeout from production!
var el, li, i;
el = document.getElementById('thelist');
for (i=0; i<
3
; i++) {
li
=
document
.createElement('li');
li.innerText
=
'添加三冰 '
+ (++generatedCount);
el.insertBefore(li, el.childNodes[0]);
}
myScroll.refresh(); //数据加载完成后,调用界面更新方法 Remember to refresh when contents are loaded (ie: on ajax completion)
}, 1000); // <-- Simulate network congestion, remove setTimeout from production!
}
/**
* 滚动翻页 (自定义实现此方法)
* myScroll.refresh(); // 数据加载完成后,调用界面更新方法
*/
function pullUpAction () {
setTimeout(function () { // <-- Simulate network congestion, remove setTimeout from production!
var el, li, i;
el
=
document
.getElementById('thelist');
for (
i
=
0
; i<3; i++) {
li
=
document
.createElement('li');
li.innerText
=
'添加三冰 '
+ (++generatedCount);
el.appendChild(li, el.childNodes[0]);
}
myScroll.refresh(); // 数据加载完成后,调用界面更新方法 Remember to refresh when contents are loaded (ie: on ajax completion)
}, 1000); // <-- Simulate network congestion, remove setTimeout from production!
}
/**
* 初始化iScroll控件
*/
function loaded() {
pullDownEl
=
document
.getElementById('pullDown');
pullDownOffset
=
pullDownEl
.offsetHeight;
pullUpEl
=
document
.getElementById('pullUp');
pullUpOffset
=
pullUpEl
.offsetHeight;
myScroll
=
new
iScroll('wrapper', {
scrollbarClass: 'myScrollbar', /* 重要样式 */
useTransition: false, /* 此属性不知用意,本人从true改为false */
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 = '松手开始更新...';
this.minScrollY = 0;
} else if (this.y <
5
&& pullDownEl.className.match('flip')) {
pullDownEl.className
=
''
;
pullDownEl.querySelector('.pullDownLabel')
.innerHTML
=
'下拉刷新...'
;
this.minScrollY = -pullDownOffset;
} else if (this.y < (this.maxScrollY - 5) && !pullUpEl.className.match('flip')) {
pullUpEl.className
=
'flip'
;
pullUpEl.querySelector('.pullUpLabel')
.innerHTML
=
'松手开始更新...'
;
this.maxScrollY
= this.maxScrollY;
} else if (this.y > (this.maxScrollY + 5) && pullUpEl.className.match('flip')) {
pullUpEl.className = '';
pullUpEl.querySelector('.pullUpLabel').innerHTML = '上拉加载更多...';
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?)
}
}
});
setTimeout(function () { document.getElementById('wrapper').style.left = '0'; }, 800);
}
//初始化绑定iScroll控件
document.addEventListener('touchmove', function (e) { e.preventDefault(); }, false);
document.addEventListener('DOMContentLoaded', loaded, false);
</
script
>
</
body
>
</
html
>
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