javaScript图片滚动轮播，图片下小圆点+两边箭头点击自动关联！

来源：互联网发布：双色球算法必中6减2 编辑：程序博客网时间：2024/04/28 23:16
示例代码：
<!DOCTYPE html><html><head>    <meta charset="utf-8" />    <title></title>    <style>        *{margin:0;padding:0;}        #box{position: relative;width:500px;height:300px;margin:100px auto;}        li{list-style:none;}        #image{width:500px;height: 300px;position: relative;}        #image li{position: absolute;top:0;left:0;display: none;}        #image li.image_show{display: block;}        #list {position: absolute;bottom: 6px;left: 50%;margin-left: -36px;}        #list li{ width: 12px;vertical-align: middle;height: 12px;float: left;border-radius: 6px;margin-right: 6px;background-color:#ccc;}        #list li.list_show{background:red;}        .round li{width: 40px; height: 40px; background-color: #cccccc;border-radius: 20px;line-height: 40px;color: white;font-size: 28px;font-weight: bold;text-align: center;}        .round li:hover{background-color: #666;cursor: pointer;}        .round_l{float: left;margin-left: 5px;}        .round_r{float:right;margin-right: 5px;}        .round{width: 500px;position: absolute;top:50%;margin-top: -20px;display: none;}    </style></head><body>    <div id="box">        <ul id="image">            <li class="image_show"><img src="1.jpg"  width="500px" height="300px"/></li>            <li><img src="2.jpg"  width="500px" height="300px"/></li>            <li><img src="3.jpg"  width="500px" height="300px"/></li>            <li><img src="4.jpg"   width="500px" height="300px"/></li>        </ul>        <ul id="list">            <li class="list_show"></li>            <li></li>            <li></li>            <li></li>        </ul>        <ul class="round" id="round">            <li class="round_l" id="round_l">&lt;</li>            <li  class="round_r" id="round_r">&gt;</li>        </ul>    </div><script type="text/javascript">    /*当鼠标进入盒子，盒子两边的圆形显示效果*/    function $(id){return document.getElementById(id);}    $("box").onmouseover=function () {        $("round").style.display="block";    }    $("box").onmouseout=function () {        $("round").style.display="none";    }    var image = $("image").getElementsByTagName("li");    var list =$("list").getElementsByTagName("li");    var round_r = $("round_r");    var round_l = $("round_l");    for (var i = 0; i < list.length; i++) {        list[i].index = i;        /*当鼠标放在图片下方小圆点上时图片自动切换*/        list[i].onmouseover = function(){            for(var j = 0;j<list.length;j++){                list[j].className="";                image[j].className="";            }            this.className="list_show";            image[this.index].className="image_show";        }    }    round_r.onclick = function(){        move(false);    }    round_l.onclick = function(){        move(true);    }    function move(boolean){        for(var i = 0;i<list.length;i++){            if(list[i].className=="list_show"){                var index = i;                break;            }        }        boolean ?(index == 0? index= list.length-1:index--):(index == list.length-1? index= 0:index++);        for(var j = 0;j<list.length;j++){            list[j].className="";            image[j].className="";        }        list[index].className="list_show";        image[index].className="image_show";    }</script></body></html>
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