js获取当前年月日 星期 农历

 <script type='text/javascript'>
window.onload = function () {
    
    
         /*日期显示*/
         /*获取当前日期*/
         function getCurrentDateTime() {
    
    
             var d = new Date();
             var year = d.getFullYear();
             var month = d.getMonth() + 1;
             var date = d.getDate();
             var week = d.getDay();
             /*时分秒*/
             /*var hours = d.getHours();
               var minutes = d.getMinutes();
               var seconds = d.getSeconds();
               var ms = d.getMilliseconds();*/
             var curDateTime = year;
             if (month > 9)
                 curDateTime = curDateTime + "年" + month;
             else
                 curDateTime = curDateTime + "年0" + month;
             if (date > 9)
                 curDateTime = curDateTime + "月" + date + "日" + "\xa0\xa0\xa0\xa0";
             else
                 curDateTime = curDateTime + "月0" + date + "日" + "\xa0\xa0\xa0\xa0";
             var weekday = "";
             if (week == 0)
                 weekday = "星期日";
             else if (week == 1)
                 weekday = "星期一";
             else if (week == 2)
                 weekday = "星期二";
             else if (week == 3)
                 weekday = "星期三";
             else if (week == 4)
                 weekday = "星期四";
             else if (week == 5)
                 weekday = "星期五";
             else if (week == 6)
                 weekday = "星期六";
             curDateTime = curDateTime + " " + weekday;
             return curDateTime + "\xa0\xa0\xa0\xa0";
         }


         /*获取当前农历*/
         function showCal() {
    
    
             var D = new Date();
             var yy = D.getFullYear();
             var mm = D.getMonth() + 1;
             var dd = D.getDate();
             var ww = D.getDay();
             var ss = parseInt(D.getTime() / 1000);
             if (yy < 100) yy = "19" + yy;
             return GetLunarDay(yy, mm, dd);
         }

         //定义全局变量
         var CalendarData = new Array(100);
         var madd = new Array(12);
         var tgString = "甲乙丙丁戊己庚辛壬癸";
         var dzString = "子丑寅卯辰巳午未申酉戌亥";
         var numString = "一二三四五六七八九十";
         var monString = "正二三四五六七八九十冬腊";
         var weekString = "日一二三四五六";
         var sx = "鼠牛虎兔龙蛇马羊猴鸡狗猪";
         var cYear, cMonth, cDay, TheDate;
         CalendarData = new Array(0xA4B, 0x5164B, 0x6A5, 0x6D4, 0x415B5, 0x2B6, 0x957, 0x2092F, 0x497, 0x60C96,
             0xD4A, 0xEA5, 0x50DA9, 0x5AD, 0x2B6, 0x3126E, 0x92E, 0x7192D, 0xC95, 0xD4A, 0x61B4A, 0xB55, 0x56A,
             0x4155B, 0x25D, 0x92D, 0x2192B, 0xA95, 0x71695, 0x6CA, 0xB55, 0x50AB5, 0x4DA, 0xA5B, 0x30A57,
             0x52B, 0x8152A, 0xE95, 0x6AA, 0x615AA, 0xAB5, 0x4B6, 0x414AE, 0xA57, 0x526, 0x31D26, 0xD95,
             0x70B55, 0x56A, 0x96D, 0x5095D, 0x4AD, 0xA4D, 0x41A4D, 0xD25, 0x81AA5, 0xB54, 0xB6A, 0x612DA,
             0x95B, 0x49B, 0x41497, 0xA4B, 0xA164B, 0x6A5, 0x6D4, 0x615B4, 0xAB6, 0x957, 0x5092F, 0x497, 0x64B,
             0x30D4A, 0xEA5, 0x80D65, 0x5AC, 0xAB6, 0x5126D, 0x92E, 0xC96, 0x41A95, 0xD4A, 0xDA5, 0x20B55,
             0x56A, 0x7155B, 0x25D, 0x92D, 0x5192B, 0xA95, 0xB4A, 0x416AA, 0xAD5, 0x90AB5, 0x4BA, 0xA5B,
             0x60A57, 0x52B, 0xA93, 0x40E95);
         madd[0] = 0;
         madd[1] = 31;
         madd[2] = 59;
         madd[3] = 90;
         madd[4] = 120;
         madd[5] = 151;
         madd[6] = 181;
         madd[7] = 212;
         madd[8] = 243;
         madd[9] = 273;
         madd[10] = 304;
         madd[11] = 334;

         function GetBit(m, n) {
    
    
             return (m >> n) & 1;
         }
         //农历转换
         function e2c() {
    
    
             TheDate = (arguments.length != 3) ? new Date() : new Date(arguments[0], arguments[1], arguments[2]);
             var total, m, n, k;
             var isEnd = false;
             var tmp = TheDate.getYear();
             if (tmp < 1900) {
    
    
                 tmp += 1900;
             }
             total = (tmp - 1921) * 365 + Math.floor((tmp - 1921) / 4) + madd[TheDate.getMonth()] + TheDate
             .getDate() - 38;

             if (TheDate.getYear() % 4 == 0 && TheDate.getMonth() > 1) {
    
    
                 total++;
             }
             for (m = 0;; m++) {
    
    
                 k = (CalendarData[m] < 0xfff) ? 11 : 12;
                 for (n = k; n >= 0; n--) {
    
    
                     if (total <= 29 + GetBit(CalendarData[m], n)) {
    
    
                         isEnd = true;
                         break;
                     }
                     total = total - 29 - GetBit(CalendarData[m], n);
                 }
                 if (isEnd) break;
             }
             cYear = 1921 + m;
             cMonth = k - n + 1;
             cDay = total;
             if (k == 12) {
    
    
                 if (cMonth == Math.floor(CalendarData[m] / 0x10000) + 1) {
    
    
                     cMonth = 1 - cMonth;
                 }
                 if (cMonth > Math.floor(CalendarData[m] / 0x10000) + 1) {
    
    
                     cMonth--;
                 }
             }
         }

         function GetcDateString() {
    
    
             var tmp = "";
             /*显示农历年：（ 如：甲午(马)年 ）*/
             tmp += tgString.charAt((cYear - 4) % 10);
             tmp += dzString.charAt((cYear - 4) % 12);
             tmp += "(";
             tmp += sx.charAt((cYear - 4) % 12);
             tmp += ")年 ";
             if (cMonth < 1) {
    
    
                 tmp += "(闰)";
                 tmp += monString.charAt(-cMonth - 1);
             } else {
    
    
                 tmp += monString.charAt(cMonth - 1);
             }
             tmp += "月";
             tmp += (cDay < 11) ? "初" : ((cDay < 20) ? "十" : ((cDay < 30) ? "廿" : "三十"));
             if (cDay % 10 != 0 || cDay == 10) {
    
    
                 tmp += numString.charAt((cDay - 1) % 10);
             }
             return tmp + "\xa0\xa0\xa0\xa0";
         }

         function GetLunarDay(solarYear, solarMonth, solarDay) {
    
    
             //solarYear = solarYear<1900?(1900+solarYear):solarYear;
             if (solarYear < 1921 || solarYear > 2020) {
    
    
                 return "";
             } else {
    
    
                 solarMonth = (parseInt(solarMonth) > 0) ? (solarMonth - 1) : 11;
                 e2c(solarYear, solarMonth, solarDay);
                 return GetcDateString();
             }
         }
         //在前台定义个id为currentDate的标签，就可以调用该方法显示了。还可以修改代码，改变日期格式
         $(function () {
    
    
             var date = getCurrentDateTime();
             var calendar = showCal();
             var tmp = GetcDateString();
             $("#currentDate").text(date + tmp);
         });

     }
 </script>