JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery

JQuery plug-in: iScroll

Page layout:

<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>
     <img  src="/static/imghwm/default1.png"  data-src="img/page1_img1.jpg"  class="lazy" / alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >
    </li>
    <li>
     <img  src="/static/imghwm/default1.png"  data-src="img/page1_img2.jpg"  class="lazy" / alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >
    </li>
    <li>
     <img  src="/static/imghwm/default1.png"  data-src="img/page1_img3.jpg"  class="lazy" / alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >
    </li>
    <li>
     <img  src="/static/imghwm/default1.png"  data-src="img/page1_img1.jpg"  class="lazy" / alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >
    </li>
    <li>
     <img  src="/static/imghwm/default1.png"  data-src="img/page1_img2.jpg"  class="lazy" / alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >
    </li>
    <li>
     <img  src="/static/imghwm/default1.png"  data-src="img/page1_img3.jpg"  class="lazy" / alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >
    </li>
   </ul>
   <div id="pullUp">
    <span class="pullUpIcon"></span><span class="pullUpLabel">上拉加载更多...</span>
   </div>
  </div>

Page turning is to pass the page number to the general handler through an ajax request. In the general handler, the paging data is obtained and returned to the json array object.

Pull down to refresh:

/**
  * 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 () { 
    var el, li, i;
    el = document.getElementById('thelist');
    //==========================================
    $.ajax({
     type: "GET",
     url: "LoadMore.ashx",
     data: { page: generatedCount },
     dataType: "json",
     success: function (data) {
      var json = data;
      $(json).each(function () {
       li = document.createElement('li');
       // li.innerText = 'Generated row ' + (++generatedCount);
       li.innerHTML = '<img  src="' + this.src + '"/ alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >';
       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!
  }

Pull up to refresh

function pullUpAction() {
   setTimeout(function () {  
    var el, li, i;
    el = document.getElementById('thelist');
    //==========================================
    $.ajax({
     type: "GET",
     url: "LoadMore.ashx",
     data: { page: generatedCount },
     dataType: "json",
     success: function (data) {
      var json = data;
      $(json).each(function () {
       li = document.createElement('li');
       //  li.innerText = 'Generated row ' + (++generatedCount);
       li.innerHTML = '<img  src="' + this.src + '"/ alt="JQuery plug-in iScroll implements pull-down refresh and scrolling page turning effects_jquery" >;     
       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!
  }

Initialization

/**
  * 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,
    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&#63;)
     } else if (pullUpEl.className.match('flip')) {
      pullUpEl.className = 'loading';
      pullUpEl.querySelector('.pullUpLabel').innerHTML = '加载中...';
      pullUpAction(); // Execute custom function (ajax call&#63;)
     }
    }
   });
   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);