选项卡 

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

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        .tab_hd {
            display: flex;
        }

        li {
            margin: 20px;
        }

        .tab_bd li {
            display: none;
        }

        .active {
            color: red;
        }

        .show {
            display: block !important;
        }
    </style>
</head>

<body>
    <ul class="tab_hd">
        <li class="active">关注</li>
        <li>推荐</li>
        <Li>热门</Li>
    </ul>
    <ul class="tab_bd">
        <li class="show">关注了个啥</li>
        <li>推荐了和啥</li>
        <li>啥事热门</li>
    </ul>

    <script>
        var ohdli = document.querySelectorAll('.tab_hd li')
        console.log(ohdli)
        var obdli = document.querySelectorAll('.tab_bd li')
        for (var j = 0; j < ohdli.length; j++) {
            ohdli[j].setAttribute('index', j)           //j不能打引号
            ohdli[j].onclick = function () {
                for (var i = 0; i < ohdli.length; i++) {
                    ohdli[i].classList.remove('active')
                }
                this.classList.add('active')
                for (var i = 0; i < obdli.length; i++) {
                    obdli[i].classList.remove('show')
                }
                var x = this.getAttribute('index')  //ohdli[j] 这个不能写 因为j永远是4
                obdli[x].classList.add('show')
            }
        }




    </script>
</body>

</html>

 

posted @ 2021-07-07 18:46  JSkolo_yyds  阅读(65)  评论(0)    收藏  举报