来看下图片播放器（JavaScript）

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Jq切换</title>
<style type="text/css">

/**********总体布局**************/
*{margin:0; padding:0; border:0;}
body{background-color:rgba(0,0,0,0.4);}
#content{position:relative; width:970px; height:550px; margin:20px auto; border:2px solid #FFF;}
#content:hover #tags img{opacity:1;}

/**********图片主要显示区**************/
#player{position:absolute; width:100%; height:100%; top:0; left:0;}
#player img{display:inline-block; position:absolute; float:left; width:970px; height:550px; top:0;}

/**********图片显示标签**************/
#tags{position:absolute; left:30px; bottom:20px;}
#tags img{display:inline-block; width:100px; height:61.8px; float:left; margin-right:10px; transition:1s; opacity:0.5;}
#tags img:hover{transform:scale(1.1); cursor:pointer;}
</style>
<script type="text/javascript" src="http://www.imooc.com/data/jquery-1.8.2.min.js"></script>
<script type="text/javascript">
    $(function(){
        var same=0;                 //用于避免触碰到相同标签式是发生切换         
        var interval=5000;          //图片切换时间(5秒)
        var timer;                  //计时器

        /*********显示和隐藏图片************/
        $("#player img").hide();
        $("#player img").eq(0).show();
        $("#tags img").mouseover(function(){
            var tags=$("#tags img").index(this);
            if(same!=tags){
                $("#player img").fadeOut();
                $("#player img").eq(tags).fadeIn(500);  
            }
            same=tags;
        })

        /*********自动播放图片***********/
        function autoplay(){
            same++;
            if(same>=$("#tags img").length){
                same=0; 
            }
            $("#player img").fadeOut();
            $("#player img").eq(same).fadeIn(500);  
        }

        /**********播放图片切换**************/
        function play(){
            timer=setInterval(autoplay,interval);   
        }

        /**********停止图片切换**************/
        function stop(){
            clearInterval(timer);   
        }

        /*****鼠标悬浮或移出时播放或停止切换图片***/
        $("#content").hover(function(){
            stop();
        },
        function(){
            play(); 
        })

        play();
    })
</script>
</head>

<body>
    <div id="content">
        <!--主显示区-->
        <div id="player">
            <img src="http://attach.bbs.miui.com/forum/201401/11/145825zn1sxa8anrg11gt1.jpg">
            <img src="http://image.tianjimedia.com/uploadImages/2011/343/WRK98UNL9520.jpg">
            <img src="http://dl.bizhi.sogou.com/images/2014/03/17/545637.jpg">
            <img src="http://bizhi.cnanzhi.com/upload/bizhi/2014/1202/14175255033658.jpg">
            <img src="http://www.longre.cn/uploadfile/2015/0525/20150525051621346.jpg">
            <img src="http://img2.niutuku.com/desk/1207/1405/bizhi-1405-62343.jpg">
            <img src="http://img.pconline.com.cn/images/upload/upc/tx/wallpaper/1209/12/c0/13805531_1347419023266.jpg">
        </div>
        <!--显示标签-->
        <div id="tags">
            <img src="http://attach.bbs.miui.com/forum/201401/11/145825zn1sxa8anrg11gt1.jpg">
            <img src="http://image.tianjimedia.com/uploadImages/2011/343/WRK98UNL9520.jpg">
            <img src="http://dl.bizhi.sogou.com/images/2014/03/17/545637.jpg">
            <img src="http://bizhi.cnanzhi.com/upload/bizhi/2014/1202/14175255033658.jpg">
            <img src="http://www.longre.cn/uploadfile/2015/0525/20150525051621346.jpg">
            <img src="http://img2.niutuku.com/desk/1207/1405/bizhi-1405-62343.jpg">
            <img src="http://img.pconline.com.cn/images/upload/upc/tx/wallpaper/1209/12/c0/13805531_1347419023266.jpg">
        </div>
    </div>
</body>
</html>