请老师帮忙检查一下

来源：3-5 编程练习

Carol246

2019-02-20 22:17:29

<!DOCTYPE html>
<html>

<head>
    <meta charset="UTF-8" />
    <title>Document</title>
    <style type="text/css">
    .container {
        width: 240px;
        height: 185px;
        margin: 0 auto;
        overflow: hidden;
    }

    .conTitle {
        height: 50px;
    }

    nav {
        width: 25%;
        height: 50px;
        line-height: 50px;
        text-align: center;
        float: left;
        background-color: #000;
        font-weight: bold;
        color: #fff;
        cursor: pointer;
    }

    nav:hover {
        background-color: #ddd;
        color: #000;
    }

    .content {
        position: relative;
    }

    .img1 {
        opacity: 1;
    }

    img {
        position: absolute;
        top: 0;
        left: 0;
        opacity: 0;
    }
    </style>
</head>

<body>
    <div class="container">
        <div class="conTitle">
            <nav>pwa</nav>
            <nav>node</nav>
            <nav>vue</nav>
            <nav>小程序</nav>
        </div>
        <div class="content">
            <img class="img1" src="img/1.jpg"/>
            <img class="img2" src="img/2.jpg"/>
            <img class="img3" src="img/3.jpg"/>
            <img class="img4" src="img/4.jpg"/>
        </div>
        </div>
        <script src="http://cdn.bootcss.com/jquery/1.12.4/jquery.js"></script>
        <script type="text/javascript">
        $(document).ready(function() {
            $("nav").click(function() {
                // 此处写代码
                $("img").eq($(this).index()).css("opacity","1")
                .siblings().css("opacity","0");
            })
        })
        </script>
</body>

</html>