js学习总结_轮播图之渐隐渐现版(实例讲解)

具体代码如下：

  
  
  
    *{
      margin:0;
      padding:0;
      font-size:14px;
      -webkit-user-select:none;
    }
    ul,li{
      list-style
    }
    img{
      display: block;
      border:none;
    }
    .banner{
      position:relative;
      width:1000px;
      height:300px;
      margin:0 auto;
      overflow:hidden;
    }
    .banner .bannerInner{
      width:100%;
      height:100%;
      background:url("../img/default.gif") no-repeat center center #e1e1e1;
    }
    .banner .bannerInner div{
      position:absolute;
      width:100%;
      height:100%;
      top:0;
      left:0;
      z-index:0;
      opacity:0;
      filter:alpha(opacity=0);
    }
    .banner .bannerInner img{
      display:none;
      width:100%;
      height:100%s;
    }

    .banner .bannerTip{
      position:absolute;
      height:18px;
      overflow:hidden;
      right:20px;
      bottom:20px;
      z-index:10;
    }
    .banner .bannerTip li{
      float:left;
      margin-left:10px;
      width:18px;
      height:18px;
      background:lightblue;
      cursor:pointer;
      border-radius:50%;
    }
    .banner .bannerTip li.bg{
      background:red;
    }

    .banner a{
      display:none;
      position:absolute;
      top:50%;
      z-index:20;
      margin-top:-22.5px;
      width:30px;
      height:45px;
      background:url("../img/pre.png");
      opacity:0.5;
      filter:alpha(opacity=50);
    }
    .banner a:hover{
      opacity:1;
      filter:alpha(opacity=100);
    }
    .banner a.bannerLeft{
      left:20px;
      background-position:0 0;
    }
    .banner a.bannerRight{
      right:20px;
      background-position:-50px 0;
    }
  


  
    
      
      
      
      
    
    

      

      

      

      

    
    
    
  

  

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