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>
 <metahttp-equiv="Content-Type"content="text/html; charset=utf-8">
 <metaname="viewport"content="width=device-width, initial-scale=1.0, user-scalable=0, minimum-scale=1.0, maximum-scale=1.0">
 <metaname="apple-mobile-web-app-capable"content="yes">
 <metaname="apple-mobile-web-app-status-bar-style"content="black">
 <title>iScroll 实例:下拉刷新,滚动翻页</title>
 <styletype="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>
 <divid="header">
  <ahref="../db.html#page2">iScroll实例:下拉刷新,滚动翻页</a>
 </div>
 
 <divid="wrapper">
  <divid="scroller">
 
   <divid="pullDown">
    <spanclass="pullDownIcon"></span><spanclass="pullDownLabel">下拉刷新...</span>
   </div>
 
   <ulid="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>
 
   <divid="pullUp">
    <spanclass="pullUpIcon"></span><spanclass="pullUpLabel">上拉加载更多...</span>
   </div>
 
  </div>
 </div>
 
 
 <divid="footer"></div>
 
<scripttype="application/javascript"src="iscroll.js"></script>
 
<scripttype="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= newiScroll('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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