// ? 这要获取服务器时间
    var stime = "";
    $.get("/getDate", {}, function(msg) {
        stime = formatDate(msg);
        initTable();
    })
    // ? 初始化表格
    function initTable() {
        for (let i = 0; i < 5; i++) {
            let tr = "<tr>{html}</tr>";
            let td = "";
            for (let j = 0; j < 7; j++) {
                td = '<td></td>' + td;
            }
            tr = tr.replace("{html}", td);
            $("tbody").append(tr);
        }
        let allDay = getNowM(stime);
        for (let i in allDay) {
            let nowDay = allDay[i];
            let nowTr = _getMonthWeek(nowDay);
            let newWeek = getweekday(nowDay);
            let tr = $("tbody tr").eq(nowTr - 1);
            $(tr).find("td").eq(newWeek).text(nowDay);
        }
    }

  // ?获取当前月的天数
    function mGetDate(now) {
        let date = new Date(now);
        let year = date.getFullYear();
        let month = date.getMonth() + 1;
        let d = new Date(year, month, 0);
        console.info(d);
        return d.getDate();
    }
    // ? 获取当前月的所有日期
    function getNowM(now) {
        now = new Date(now);
        let current_month_num = mGetDate(now);
        let current_month = [];
        for (let i = 1; i <= current_month_num; i++) {
            let day = now.setDate(i);
            let everyDay = formatDate(day);
            current_month.push(everyDay);
        }
        return current_month;
    }
    // ?根据日期返回第几周
    function _getMonthWeek(theDate) {
        let currentDay = new Date(theDate);
        let theSaturday = currentDay.getDate() + (6 - currentDay.getDay());
        return Math.ceil(theSaturday / 7);
    }
    // ?根据日期返回周几
    function getweekday(date) {
        let weekArray = new Array(0, 1, 2, 3, 4, 5, 6, 7);
        let week = weekArray[new Date(date).getDay()]; //注意此处必须是先new一个Date
        return week;
    }
    // ? 格式化时间
    function formatDate(date) {
        date = new Date(date);
        let myyear = date.getFullYear();
        let mymonth = date.getMonth() + 1;
        let myweekday = date.getDate();
        mymonth < 10 ? mymonth = "0" + mymonth : mymonth;
        myweekday < 10 ? myweekday = "0" + myweekday : myweekday;
        return myyear + "-" + mymonth + "-" + myweekday;
    }

 <table>
                <thead>
                    <tr>
                        <td>星期日</td>
                        <td>星期一</td>
                        <td>星期二</td>
                        <td>星期三</td>
                        <td>星期四</td>
                        <td>星期五</td>
                        <td>星期六</td>
                    </tr>
                </thead>
                <tbody>

                </tbody>
            </table>