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Simple carousel effect implemented by Jquery [with examples]_jquery

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2016-05-16 15:04:491045browse

Simple carousel effect implemented by Jquery [with examples] 

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <link rel="stylesheet" href="css/index.css">
  <script src="js/jquery-1.11.3.js"></script>
  <script src="js/baner.js"></script>
</head>
<body>
  <div class="main">
    <a href=""><img src="img/baner-1.jpg" alt=""></a>
    <a href=""><img src="img/baner-2.jpg" alt=""></a>
    <a href=""><img src="img/baner-3.jpg" alt=""></a>
    <a href=""><img src="img/baner-4.jpg" alt=""></a>
    <ul>
      <li>1</li>
      <li>2</li>
      <li>3</li>
      <li>4</li>
    </ul>
  </div>
</body>
</html>
/*************初始化************/
*{margin:0;padding: 0;border: none;list-style: none}
/*********轮播左右居中*************/
.main{
  width: 1024px;
  height: 320px;
  margin: 0 auto;
  position: relative;
}
.main a{
  position: absolute;
}
.main a img{
  width: 100%;
  height: 320px;

}
/***********左边小图标************/
.main ul li.selected{
  background: #f97157;
}
.main ul{
  position: absolute;
  z-index: 999;
  top: 120px;
  left: 20px;
}
.main ul li{
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #909090;
  cursor: pointer;
  text-align: center;
}
/**
 * Created by Administrator on 16-3-12.
 */
/***********定义全局变量和定时器*************/
var t=null;

var n=0;/**动态变化**/
var count;
/************************/
$(function(){
  count=$(".main a").length;/*给动态变化的n备用*/
  /**让不是轮播中的第一个隐藏**/
  $(".main a:not(:first-child)").hide();
  /*点击当前li当前li对应的图片显示出来*/
  $(".main ul li").click(function(){
    var index=$(this).text()-1;
    n=index;
    console.log(n);
    /*****让当前显示的图片0.5S内渐隐，并匹配下一个渐显示*****/
    $(".main a").filter(":visible").fadeOut(500).parent().children().eq(index).fadeIn(1000);
    /*******聚焦，给当前li追加类，改变背景色*******/
    $(this).addClass("selected");
    /****同时移除当前li的所有兄弟的类名为selected，还原背景色*****/
    $(this).siblings().removeClass("selected");
  });
  /***定义定时器3秒执行一次****/
  t=setInterval("autoMove()",3000);
  /****当鼠标进入时候定时器停止，移除时候定时器开启****/
  $(".main").hover(function(){clearInterval(t)}, function(){t = setInterval("autoMove()", 3000);});
});
/***定义自动轮播函数****/
function autoMove(){
  if(n>=(count-1)){
    n=0;
  }else{
   ++n;
  }
  /*****给li执行匹配的事件*****/
  $(".main ul li").eq(n).trigger("click");
}

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