js控住DOM实现发布微博效果

这段代码的效果具体是输入标题和内容，点击发布把消息发布出去，并使最新的消息始终在内容的最上面，代码为：

 
 
 
 *{margin:0;padding: 0;}
 .warp{
  width: 600px;
  margin:50px auto 0;
  background-color: #ccc;
 }
 #box{
  width: 600px;
  height: 340px;
  
  position: relative;
  
  
  font-family: '微软雅黑';
 }
 #box .span1{
  position: absolute;
  font-size: 16px;
  line-height: 16px;
  top: 10px;
  left: 5px;
 }
 #box .span2{
  position: absolute;
  font-size: 16px;
  line-height: 16px;
  top: 50px;
  left: 5px;
 }
 #title{
  position: absolute;
  width: 460px;
  height: 20px;
  line-height: 20px;
  font-size: 16px;
  text-indent: 5px;
  left: 70px;
  top: 6px;
 }
 #text{
  position: absolute;
  width: 460px;
  height: 250px;
  resize: none;
  top: 50px;
  left: 70px;
  text-indent: 5px;
  font-size: 16px;
 }
 #box #prompt{
  position: absolute;
  top: 312px;
  left: 340px;
 }
 #prompt1{
  position: absolute;
  top: 312px;
  left: 340px;
  display: none;
 }
 #send{
  position: absolute;
  height: 25px;
  width: 60px;
  line-height: 20px;
  font-size: 16px;
  top: 310px;
  right: 68px;
 }
 #news{
  list-style: none;
  width: 490px;
  margin:10px auto 0px;
  padding-bottom: 5px;
 }
 #news li{
  width: 490px;
  font-size: 14px;
  overflow: hidden;
  background-color: #fff;
  margin-bottom: 5px;
  position: relative;
 }
 #news li h1{
  font-size: 16px;
  line-height: 20px;
 }
 #news li p{
  text-indent: 5px;
  clear: left;
 }
 #news li span{
  position: absolute;
  top: 0px;
  right: 0px;
  cursor: pointer;
 }
 #news span:hover{
  color: red;
 }
 


 
  
   标题：
   
   内容：
   
   还可以输入200字
   你已超出字
   发送