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三级下拉菜单

吴勇文2018-11-08 16:42:43165
<!DOCTYPE html>
<html>
    <head>
         <meta charset="utf-8">
         <title>三级导航</title>
         <style type="text/css">
            .box{width: 600px;height: 32px;margin: 0px auto;}
            .one li{list-style: none;width: 100px;height: 30px;border:1px solid #ccc;text-align: center;background-color: #181818;line-height: 28px;color: white;cursor: pointer;}
            .one li:hover{background-color: #ccc;}
            .one>li{display: inline-block;position: relative;}
            .two{float: left;position: absolute;left: -41px;top: 31px;display: none;}
            .three{float: left;position: absolute;left: 102px;top: 32px;display: none;}
         </style>
    </head>
    <body>
        <div class="box">
            <ul class="one">
                <li>首页</li>
                <li>公司介绍</li>
                <li id="chanpin1">产品介绍
                    <ul class="two">
                        <li>产品介绍1</li>
                        <li id="chanpin2">产品介绍2
                            <ul class="three">
                                <li>产品细节1</li>
                                <li>产品细节2</li>
                            </ul>
                        </li>
                        <li>产品介绍3</li>
                        <li>产品介绍4</li>
                        <li>产品介绍5</li>
                    </ul>
                </li>
                <li>品牌故事</li>
                <li>联系我们</li>
            </ul>
        </div>
         <script src="jquery-3.3.1.js"></script>
         <script>
             $(document).ready(function(){
               $('#chanpin1').mouseenter(function(){
                   $('.two').css('display','block');
               });
               $('#chanpin1').mouseleave(function(){
                   $('.two').css('display','none');
               });
               $('#chanpin2').mouseenter(function(){
                   $('.three').css('display','block');
               });
               $('#chanpin2').mouseleave(function(){
                   $('.three').css('display','none');
               });
             });
         </script>
    </body>
</html>

看了视频,隔了一天来写的作业,总体效果是实现了,就是结构方面感觉没有老师写的简洁,过两天再看视频重新再写几次

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