jQuery implements dynamic loading effects of list content_jquery

Using Jquery to implement the dynamic update effect of list data, the updated data can be the data requested by ajax.

CSS:

.main {
 width: 100%;
 margin-top: 100px;
 text-align: center;
 font-size: 12.5px;
}

th, td {
 border: 1px solid #ccc;
 line-height: 40px;
 padding-left: 5px;
}
.item:hover {
 background-color: #efefef;
}
.item:nth-child(2n) {
 background-color: #efefef;
}
.ListView {
 width: 600px;
 overflow: hidden;
 margin: 0 auto;
 padding: 10px;
 height:372px;
 border: 1px solid #dddddd;
}
.ListView .c {
 width: 1200px;
 margin: 0 auto;
 border-collapse: collapse;
}
.Item {
 border-bottom: 1px dashed #dddddd;
 padding: 10px 0 10px 0;
 overflow: hidden;
 margin-left:600px;
}
.Item span {
 float: left;
 text-align: left;
}
.Item span:first-child {
 color: #6AA8E8;
}
.Item span:last-child {
 text-align: center;
}

HTML

<div class="main">
 <div class="ListView">
  <div class="c">
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
  <div class="Item"> <span>test</span> <span>男/0</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>
 </div>
 </div>
</div>
<p style="text-align:center;"><a href="javascript:void(0);" onClick="ListView.Update();">刷新数据</a></p>

JS

<script type="text/javascript" src="/js/jquery-1.8.0.min.js"></script>
<script type="text/javascript">
$(function(){
 ListView.Init();
});
var ListView={
 Init:function(){
 $(".Item span").css("width",$(".ListView").width()/4+"px");
 for(var i=0;i<$(".Item").length;i++){
 var target=$(".Item")[i];
 $(target).animate({marginLeft:"0px"},300+i*100);
 }
 },
 Update:function(){
 $(".ListView .c .Item").remove();
 for(var i=0;i<10;i++){
 var newItem=$("<div class=\"Item\"> <span>test</span> <span>男/"+i+"</span> <span>四川省，成都市，锦江区</span> <span>详细说明</span> </div>");
 $(newItem).find("span").css("width",$(".ListView").width()/4+"px");
 $(".ListView .c").append(newItem);
 $(newItem).animate({marginLeft:"0px"},300+i*100);
 }
 }
}
</script>

Attached is the demo effect http://demo.jb51.net/js/2015/jquery-dtlb

Isn’t the effect great? Next, let’s take a look at the implementation ideas of waterfall flow and the JS code to control dynamic loading

The following code is mainly used to control the loading event when the scroll bar is pulled down

In the following code description, just write your operation, whether it is loading pictures or loading recorded data

Don’t forget to quote the jquery class library

 $(window).scroll(function () {
  var scrollTop = $(this).scrollTop();
  var scrollHeight = $(document).height();
  var windowHeight = $(this).height();
  if (scrollTop + windowHeight == scrollHeight) {

  //此处是滚动条到底部时候触发的事件，在这里写要加载的数据，或者是拉动滚动条的操作

//var page = Number($("#redgiftNextPage").attr('currentpage')) + 1;
//redgiftList(page);
//$("#redgiftNextPage").attr('currentpage', page + 1);

  }
 });

Analysis:

To determine whether the scroll bar reaches the bottom, you need to use three attribute values ​​​​of the DOM, namely scrollTop, clientHeight, and scrollHeight.
scrollTop is the scrolling distance of the scroll bar on the Y axis.
clientHeight is the height of the content visible area.
scrollHeight is the height of the content's visible area plus the overflow (scrolling) distance.
From the introduction of these three properties, we can see that the condition for the scroll bar to reach the bottom is scrollTop clientHeight == scrollHeight. (Compatible with different browsers).