$(document).ready(function() {
    var dates = new Date();
    var year = dates.getYear();
    var month = dates.getMonth() + 1;
    var date = dates.getDate();
    var datestr = year + "年" + month + "月" + date + "日";
    var dayweek;
    if (dates.getDay() == 0) dayweek = "周日";
    if (dates.getDay() == 1) dayweek = "周一";
    if (dates.getDay() == 2) dayweek = "周二";
    if (dates.getDay() == 3) dayweek = "周三";
    if (dates.getDay() == 4) dayweek = "周四";
    if (dates.getDay() == 5) dayweek = "周五";
    if (dates.getDay() == 6) dayweek = "周六";
    datestr = datestr + "  " + dayweek;
    $("#showtime").text(datestr);
});