利用到了层叠,事件委托和自定义属性,唯一的缺点是num会一直自增,但是只要页面一刷新,num就重置了

下面放图

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            padding: 0;
            margin: 0;
            box-sizing: border-box;
        }

        html,
        body {
            width: 100%;
            height: 100%;
        }

        ul {
            list-style: none;
        }

        .box {
            width: 500px;
            height: 300px;
            margin: 100px auto;
        }

        .tab-header {
            height: 40px;
            line-height: 40px;
            background-color: skyblue;
        }

        .tab-header ul {
            display: flex;
        }

        .tab-header ul li {
            width: 33.3333%;
            cursor: pointer;
            text-align: center;
        }

        .tab-body {
            position: relative;
            height: 260px;
        }

        .tab-body div {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: pink;
        }

        .tab-body div:first-child {
            z-index: 1;
        }

        .active {
            color: red;
        }
    </style>
</head>

<body>
    <div class="box">
        <div class="tab-header">
            <ul>
                <li data-id="0" class="active">我的</li>
                <li data-id="1">首页</li>
                <li data-id="2">音乐</li>
            </ul>
        </div>
        <div class="tab-body">
            <div>个人中心内容</div>
            <div>首页内容</div>
            <div>音乐内容</div>
        </div>
    </div>
    <script>
        const ul = document.querySelector('.tab-header ul')
        const contents = document.querySelectorAll('.tab-body div')
        let num = 1
        ul.addEventListener('click', function (e) {
            // 点击那个,那个li就添加active这个类,利用排他
            document.querySelector('.active').classList.remove('active')
            e.target.classList.add('active')
            // 显示对应的内容
            contents[e.target.dataset.id].style.zIndex = num++
        })
    </script>
</body>

</html>

原文链接:https://blog.csdn.net/qq_52845451/article/details/125696218

最后修改:2023 年 10 月 30 日
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