js 简易万年历02

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

<head>
    <title></title>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <!-- <link href="css/style.css" rel="stylesheet"> -->
    <style type="text/css">
        * {
            padding: 0;
            margin: 0;
        }

        li {
            list-style: none;
        }

        body {
            background: #f6f9fc;
            font-family: arial;
        }

        .calendar {
            width: 210px;
            margin: 0 auto;
            padding: 10px 10px 20px 20px;
            background: #eae9e9;
        }

        .calendar ul {
            width: 210px;
            overflow: hidden;
            padding-bottom: 10px;
        }

        .calendar li {
            float: left;
            width: 58px;
            height: 54px;
            margin: 10px 10px 0 0;
            border: 1px solid #fff;
            background: #424242;
            color: #fff;
            text-align: center;
            cursor: pointer;
        }

        .calendar li h2 {
            font-size: 20px;
            padding-top: 5px;
        }

        .calendar li p {
            font-size: 14px;
        }

        .calendar .active {
            border: 1px solid #424242;
            background: #fff;
            color: #e84a7e;
        }

        .calendar .active p {
            font-weight: bold;
        }

        .calendar .text {
            width: 178px;
            padding: 0 10px 10px;
            border: 1px solid #fff;
            padding-top: 10px;
            background: #f1f1f1;
            color: #555;
        }

        .calendar .text h2 {
            font-size: 14px;
            margin-bottom: 10px;
        }

        .calendar .text p {
            font-size: 12px;
            line-height: 18px;
        }
    </style>

</head>

<body>

    <div id="tab" class="calendar">

        <ul id="box">
            <li class="active">
                <h2>1</h2>
                <p>JAN</p>
            </li>
            <li>
                <h2>2</h2>
                <p>FER</p>
            </li>
            <li>
                <h2>3</h2>
                <p>MAR</p>
            </li>
            <li>
                <h2>4</h2>
                <p>APR</p>
            </li>
            <li>
                <h2>5</h2>
                <p>MAY</p>
            </li>
            <li>
                <h2>6</h2>
                <p>JUN</p>
            </li>
            <li>
                <h2>7</h2>
                <p>JUL</p>
            </li>
            <li>
                <h2>8</h2>
                <p>AUG</p>
            </li>
            <li>
                <h2>9</h2>
                <p>SEP</p>
            </li>
            <li>
                <h2>10</h2>
                <p>OCT</p>
            </li>
            <li>
                <h2>11</h2>
                <p>NOV</p>
            </li>
            <li>
                <h2>12</h2>
                <p>DEC</p>
            </li>
        </ul>

        <div class="text" id="txt">
            <h2>1月活动</h2>
            <p>快过年了，大家可以商量着去哪玩吧～</p>
        </div>

    </div>

</body>
<script>
    // 获取元素
    var oli = document.querySelectorAll("li");
    var h1 = document.querySelector("#txt h2");
    var p = document.querySelector("#txt p");
    console.log(h1);
    // 定义一个数组模拟后台
    var arr = ['快过年了，大家可以商量着去哪玩吧～',
        '大家好好学习吧222222~~~',
        '大家好好学习吧222222333~~~',
        '大家好好学习吧222444222~~~',
        '大家好好学习555吧222222~~~',
        '大家好好学习吧666222222~~~',
        '大家好好学习吧227772222~~~',
        '大家好好学习吧28888822222~~~',
        '大家好好学习吧99999222222~~~',
        '大家好好学习10000000吧222222~~~',
        '大家好好学习吧111111222222~~~',
        '大家好好学习吧22222200000000000~~~'
    ];

    // 给每一个元素绑定点击事件
    for (var i = 0; i < oli.length; i++) {
        //    给每一个元素编号
        oli[i].index = i;
        oli[i].onclick = function () {
            //   去除所有给当前加
            for (var i = 0; i < oli.length; i++) {
                oli[i].className = "";
            }
            this.className = "active";
            for (var j = 0; j < arr.length; j++) {
                h1.innerHTML = this.index + 1 + "月活动";
                p.innerHTML = arr[this.index];
            }
        }
    }
</script>

</html>
效果图

在这里插入图片描述
效果图

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