很好用的js日历算法详细代码

<script type="text/javascript"> 
        var lunarInfo = new Array( 
0x04bd8, 0x04ae0, 0x0a570, 0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2, 
0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0, 0x0ada2, 0x095b0, 0x14977, 
0x04970, 0x0a4b0, 0x0b4b5, 0x06a50, 0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 
0x06566, 0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0, 0x1c8d7, 0x0c950, 
0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4, 0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 
0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950, 0x06aa0, 
0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0, 
0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6, 
0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570, 
0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, 
0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5, 
0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930, 
0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530, 
0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45, 
0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0) 
        var Animals = new Array("鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"); 
        var Gan = new Array("甲", "乙", "丙", "丁", "戊", "己", "庚", "辛", "壬", "癸"); 
        var Zhi = new Array("子", "丑", "寅", "卯", "辰", "巳", "午", "未", "申", "酉", "戌", "亥"); 
        var now = new Date(); 
        var SY = now.getFullYear(); 
        var SM = now.getMonth(); 
        var SD = now.getDate(); 

        //==== 传入 offset 传回干支, 0=甲子  
        function cyclical(num) { return (Gan[num % 10] + Zhi[num % 12]) } 

        //==== 传回农历 y年的总天数  
        function lYearDays(y) { 
            var i, sum = 348 
            for (i = 0x8000; i > 0x8; i >>= 1) sum += (lunarInfo[y - 1900] & i) ? 1 : 0 
            return (sum + leapDays(y)) 
        } 

        //==== 传回农历 y年闰月的天数  
        function leapDays(y) { 
            if (leapMonth(y)) return ((lunarInfo[y - 1900] & 0x10000) ? 30 : 29) 
            else return (0) 
        } 

        //==== 传回农历 y年闰哪个月 1-12 , 没闰传回 0  
        function leapMonth(y) { return (lunarInfo[y - 1900] & 0xf) } 

        //====================================== 传回农历 y年m月的总天数  
        function monthDays(y, m) { return ((lunarInfo[y - 1900] & (0x10000 >> m)) ? 30 : 29) } 

        //==== 算出农历, 传入日期物件, 传回农历日期物件  
        //     该物件属性有 .year .month .day .isLeap .yearCyl .dayCyl .monCyl  
        function Lunar(objDate) { 
            var i, leap = 0, temp = 0 
            var baseDate = new Date(1900, 0, 31) 
            var offset = (objDate - baseDate) / 86400000 

            this.dayCyl = offset + 40 
            this.monCyl = 14 

            for (i = 1900; i < 2050 && offset > 0; i++) { 
                temp = lYearDays(i) 
                offset -= temp 
                this.monCyl += 12 
            } 
            if (offset < 0) { 
                offset += temp; 
                i--; 
                this.monCyl -= 12 
            } 

            this.year = i 
            this.yearCyl = i - 1864 

            leap = leapMonth(i) //闰哪个月  
            this.isLeap = false

            for (i = 1; i < 13 && offset > 0; i++) { 
                //闰月  
                if (leap > 0 && i == (leap + 1) && this.isLeap == false) 
                { --i; this.isLeap = true; temp = leapDays(this.year); } 
                else
                { temp = monthDays(this.year, i); } 

                //解除闰月  
                if (this.isLeap == true && i == (leap + 1)) this.isLeap = false

                offset -= temp 
                if (this.isLeap == false) this.monCyl++ 
            } 

            if (offset == 0 && leap > 0 && i == leap + 1) 
                if (this.isLeap) 
                { this.isLeap = false; } 
                else
                { this.isLeap = true; --i; --this.monCyl; } 

            if (offset < 0) { offset += temp; --i; --this.monCyl; } 

            this.month = i 
            this.day = offset + 1 
        } 

        function YYMMDD() { 
            var cl = '<font color="#0000df" STYLE="font-size:9pt;">'; 
            if (now.getDay() == 0) cl = '<font color="#c00000" STYLE="font-size:9pt;">'; 
            if (now.getDay() == 6) cl = '<font color="#00c000" STYLE="font-size:9pt;">'; 
            return (cl + SY + '年' + (SM + 1) + '月' + SD + '日</font>'); 
        } 
        function weekday() { 
            var day = new Array("星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六"); 
            var cl = '<font color="#000000" STYLE="font-size:9pt;">'; 
            if (now.getDay() == 0) cl = '<font color="#ff0000" STYLE="font-size:9pt;">'; 
            if (now.getDay() == 6) cl = '<font color="#ff0000" STYLE="font-size:9pt;">'; 
            return (cl + day[now.getDay()] + '</font>'); 
        } 
        //==== 中文日期  
        function cDay(m, d) { 
            var nStr1 = new Array('日', '一', '二', '三', '四', '五', '六', '七', '八', '九', '十'); 
            var nStr2 = new Array('初', '十', '廿', '卅', '　'); 
            var s; 
            if (m > 10) { s = '十' + nStr1[m - 10] } else { s = nStr1[m] } s += '月'
            switch (d) { 
                case 10: s += '初十'; break; 
                case 20: s += '二十'; break; 
                case 30: s += '三十'; break; 
                default: s += nStr2[Math.floor(d / 10)]; s += nStr1[d % 10]; 
            } 
            return (s); 
        } 

        function solarDay2() { 
            var sDObj = new Date(SY, SM, SD); 
            var lDObj = new Lunar(sDObj); 
            var cl = '<font color="#000066" STYLE="font-size:9pt;">'; 
            //农历BB'+(cld[d].isLeap?'闰 ':' ')+cld[d].lMonth+' 月 '+cld[d].lDay+' 日  
            var tt = '农历' + cDay(lDObj.month, lDObj.day); 
            return (cl + tt + '</font>'); 
        } 
        function solarDay3() { 
            var sTermInfo = new Array(0, 21208, 42467, 63836, 85337, 107014, 128867, 150921, 173149, 

195551, 218072, 240693, 263343, 285989, 308563, 331033, 353350, 375494, 397447, 419210, 

440795, 462224, 483532, 504758) 
            var solarTerm = new Array("小寒", "大寒", "立春", "雨水", "惊蛰", "春分", "清明", "谷雨", "立夏", "小满", "芒种", "夏至", "小暑", "大暑", "立秋", "处暑", "白露", "秋分", "寒露", "霜降", "立冬", "小雪", "大雪", "冬至") 
            var lFtv = new Array("0101*春节", "0115 元宵节", "0505 端午节", "0707 七夕情人节", "0715 中元节", "0815 中秋节", "0909 重阳节", "1208 腊八节", "1224 小年", "0100*除夕") 
            var sFtv = new Array("0101*元旦", "0214 情人节", "0308 妇女节", "0312 植树节", "0315 消费者权益日", "0401 愚人节", "0501 劳动节", "0504 青年节", "0512 护士节", "0601 儿童节", "0701 建党节 香港回归纪念", 
"0801 建军节", "0808 父亲节", "0909 南晟网周年纪念日", "0910 教师节", "0928 孔子诞辰", "1001*国庆节", 
"1006 老人节", "1024 联合国日", "1112 孙中山诞辰", "1220 澳门回归纪念", "1225 圣诞节", "1226 *诞辰") 

            var sDObj = new Date(SY, SM, SD); 
            var lDObj = new Lunar(sDObj); 
            var lDPOS = new Array(3) 
            var festival = '', solarTerms = '', solarFestival = '', lunarFestival = '', tmp1, tmp2; 
            //农历节日  
            for (i in lFtv) 
                if (lFtv[i].match(/^(\d{2})(.{2})([\s\*])(.+)$/)) { 
                    tmp1 = Number(RegExp.$1) - lDObj.month 
                    tmp2 = Number(RegExp.$2) - lDObj.day 
                    if (tmp1 == 0 && tmp2 == 0) lunarFestival = RegExp.$4 
                } 
            //国历节日  
            for (i in sFtv) 
                if (sFtv[i].match(/^(\d{2})(\d{2})([\s\*])(.+)$/)) { 
                    tmp1 = Number(RegExp.$1) - (SM + 1) 
                    tmp2 = Number(RegExp.$2) - SD 
                    if (tmp1 == 0 && tmp2 == 0) solarFestival = RegExp.$4 
                } 
            //节气  
            tmp1 = new Date((31556925974.7 * (SY - 1900) + sTermInfo[SM * 2 + 1] * 60000) + Date.UTC(1900, 0, 6, 2, 5)) 
            tmp2 = tmp1.getUTCDate() 
            if (tmp2 == SD) solarTerms = solarTerm[SM * 2 + 1] 
            tmp1 = new Date((31556925974.7 * (SY - 1900) + sTermInfo[SM * 2] * 60000) + Date.UTC(1900, 0, 6, 2, 5)) 
            tmp2 = tmp1.getUTCDate() 
            if (tmp2 == SD) solarTerms = solarTerm[SM * 2] 

            if (solarTerms == '' && solarFestival == '' && lunarFestival == '') 
                festival = ''; 
            else
                festival = '<FONT COLOR="#ff0000" STYLE="font-size:9pt;">' + solarTerms + ' ' + solarFestival + ' ' + lunarFestival + '</FONT>'; 

            var cl = '<font color="#000066" STYLE="font-size:9pt;">'; 
            return (cl + festival + '</font>'); 
        } 
        function setCalendar() { 

            document.write(YYMMDD() + ' ' + weekday() + ' ' + solarDay2() + ' ' + solarDay3()); 
        } 

        setCalendar(); 
        //-->  

        //获取当月的阳历天数 
        function getNowMonthDays(year, month) { 
            var isy = false; 
            if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) isy = true; 
            switch (month) { 
                case 1: 
                case 3: 
                case 5: 
                case 7: 
                case 8: 
                case 10: 
                case 12: 
                    return 31; 
                case 4: 
                case 6: 
                case 9: 
                case 11: 
                    return 30; 
                case 2: 
                    return isy ? 28 : 29; 
            } 
        } 
        //获取该月一号是周几 
        function getStartWeek() { 
            var tempnum = SD % 7; 
            var week = now.getDay() + 1; //今天周几 
            var startweek = week + 7 - tempnum; 
            return startweek > 7 ? startweek % 7 : startweek; 
        } 

        //获取农历 
        function getSolarDay(year, month, day) { 
            var sDObj = new Date(year, month, day); 
            var lDObj = new Lunar(sDObj); 
            //农历BB'+(cld[d].isLeap?'闰 ':' ')+cld[d].lMonth+' 月 '+cld[d].lDay+' 日  
            return cDay(lDObj.month, lDObj.day); 
        } 

        //月视图 
        function showMonth() { 
            debugger; 
            var days = getNowMonthDays(SY, SM + 1); 
            var startweek = getStartWeek(); 
            var html = "<tr><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><td>星期日</td></tr><tr>"; 
            var index = 0; 
            for (var i = 1; i < startweek; i++) { 
                html += "<td> </td>"; index++; 
            } 
            for (var i = 1; i <= days; i++) { 

                if (index % 7 == 0) { 
                    html += "</tr><tr>"; 
                } html += "<td>" + i + "<br>" + getSolarDay(SY, SM, i) + "</td>"; 
                index++; 
            } 
            for (var i = 0; i < 7; i++) { 
                if (index % 7 == 0) { 
                    break; 
                } 
                html += "<td> </td>"; index++; 
            } 
            html += "</tr>"; 
            $("#table_calendar").html(html); 
        } 

    </script>

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