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菜单显示隐藏

<!DOCTYPE html><html lang="en"><head>    <meta charset="UTF-8">    <title>菜单显示隐藏</title>    <style>        *{            margin:0;padding:0;            font-family: "微软雅黑";        }        a{            text-decoration: none;            color:#fff;            display: inline-block;        }        #menu {        }        li{            list-style-type: none;            background-color: #0477c0;            border-bottom:1px solid #1681c4;            width:220px;            height:70px;        }        .content a{            margin-left:13px;        }        .title{            margin-left:15px;            padding-top:14px;        }        .content{            margin-left:2px;            margin-top:4px;        }        .content a{            color:#97D2F7;            font-size: 14px;        }        .hide{            background-color: #00be3c;            display: none;            position: absolute;            left:220px;        }        #it{            width:600px;            height:400px;            top:0;        }        #it2{            top:71px;            width:800px;            height:500px;        }        #it3{             top:142px;             width:300px;             height:200px;        }        #it4{            top:213px;            width:650px;            height:350px;        }        #it5{            top:284px;            width:300px;            height:200px;        }        #it6{            top:355px;            width:300px;            height:200px;        }    </style></head><body><div id="menu">    <ul>        <li class="list">            <p class="title"><a href="">IT互联网</a></p>            <p class="content"><a href="">前端开发</a><a href="">Linux运维</a></p>            <div class="hide" id="it">content</div>        </li>        <li class="list">            <p class="title"><a href="">设计创作</a></p>            <p class="content"><a href="">平面设计</a><a href="">游戏美术设计</a><a href="">CAD</a></p>            <div class="hide" id="it2">content2</div>        </li>        <li class="list">            <p class="title"><a href="">语言留学</a></p>            <p class="content"><a href="">实用口语</a><a href="">雅思</a><a href="">托福</a></p>            <div class="hide" id="it3">content3</div>        </li>        <li class="list">            <p class="title"><a href="">职业考证</a></p>            <p class="content"><a href="">公考求职</a><a href="">财会金融</a><a href="">医疗卫生</a></p>            <div class="hide" id="it4">content4</div>        </li>        <li class="list">            <p class="title"><a href="">升学考研</a></p>            <p class="content"><a href="">考研</a><a href="">大学</a><a href="">高中</a><a href="">初中</a></p>            <div class="hide" id="it5">content5</div>        </li>        <li class="list">            <p class="title"><a href="">兴趣生活</a></p>            <p class="content"><a href="">摄影</a><a href="">乐器</a><a href="">美妆</a><a href="">育儿</a></p>            <div class="hide" id="it6">content6</div>        </li>    </ul></div><script src="jquery-3.0.0.js"></script><script>    $(function () {        $(".list").mouseover(function () {            $(this).children(".hide").show();        });        $(".list").mouseout(function () {            $(this).children(".hide").hide();        })    })</script></body></html>

注意:隐藏内容要放到li标签里面

菜单显示隐藏