JS生成日历

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

<head>
    <meta charset="UTF-8">

    <title>Document</title>
    <style>
        #box {
            font-size: 50px;
            color: red;
        }
    </style>
</head>

<body>
    <div id="box"></div>
    <script>
        function getToday() {
            var week = ["星期天", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"];
            var box = document.getElementById("box");
            var today = new Date();

            var yy = today.getFullYear(); //年

            var mm = todouble(today.getMonth() + 1); //月，从0开始，0代表1月份

            var dd = todouble(today.getDate());//日

            var hh = todouble(today.getHours());//时

            var MM = todouble(today.getMinutes());//分

            var ss = todouble(today.getSeconds());//秒

            var ee = today.getDay();//星期。从0开始，0代表周日

            var dddd = yy + "年" + mm + "月" + dd + "日" + "&nbsp;&nbsp;" + hh + ":" + MM + ":" + ss + "&nbsp;&nbsp;" + week[ee];

            box.innerHTML = dddd;
        }

        getToday();
        var timer = setInterval(getToday, 1000);

        function todouble(n) {
            return n < 10 ? "0" + n : "" + n;
        }

    </script>
</body>

</html>

在这里插入图片描述