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+let lunarYearArr = [
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+ 0x0b557, //1949
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+ 0x06ca0, 0x0b550, 0x15355, 0x04da0, 0x0a5b0, 0x14573, 0x052b0, 0x0a9a8, 0x0e950, 0x06aa0, //1950-1959
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+ 0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260, 0x0f263, 0x0d950, 0x05b57, 0x056a0, //1960-1969
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+ 0x096d0, 0x04dd5, 0x04ad0, 0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b6a0, 0x195a6, //1970-1979
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+ 0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40, 0x0af46, 0x0ab60, 0x09570, //1980-1989
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+ 0x04af5, 0x04970, 0x064b0, 0x074a3, 0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, //1990-1999
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+ 0x0c960, 0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0, 0x092d0, 0x0cab5, //2000-2009
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+ 0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9, 0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930, //2010-2019
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+ 0x07954, 0x06aa0, 0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65, 0x0d530, //2020-2029
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+ 0x05aa0, 0x076a3, 0x096d0, 0x04afb, 0x04ad0, 0x0a4d0, 0x1d0b6, 0x0d250, 0x0d520, 0x0dd45, //2030-2039
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+ 0x0b5a0, 0x056d0, 0x055b2, 0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0, //2040-2049
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+ 0x14b63, 0x09370, 0x049f8, 0x04970, 0x064b0, 0x168a6, 0x0ea50, 0x06b20, 0x1a6c4, 0x0aae0, //2050-2059
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+ 0x0a2e0, 0x0d2e3, 0x0c960, 0x0d557, 0x0d4a0, 0x0da50, 0x05d55, 0x056a0, 0x0a6d0, 0x055d4, //2060-2069
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+ 0x052d0, 0x0a9b8, 0x0a950, 0x0b4a0, 0x0b6a6, 0x0ad50, 0x055a0, 0x0aba4, 0x0a5b0, 0x052b0, //2070-2079
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+ 0x0b273, 0x06930, 0x07337, 0x06aa0, 0x0ad50, 0x14b55, 0x04b60, 0x0a570, 0x054e4, 0x0d160, //2080-2089
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+ 0x0e968, 0x0d520, 0x0daa0, 0x16aa6, 0x056d0, 0x04ae0, 0x0a9d4, 0x0a2d0, 0x0d150, 0x0f252, //2090-2099
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+ 0x0d520 //2100
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+ ],
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+ lunarMonth = ['正', '二', '三', '四', '五', '六', '七', '八', '九', '十', '冬', '腊'],
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+ lunarDay = ['一', '二', '三', '四', '五', '六', '七', '八', '九', '十', '初', '廿'],
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+ tianGan = ['甲', '乙', '丙', '丁', '戊', '己', '庚', '辛', '壬', '癸'],
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+ diZhi = ['子鼠', '丑牛', '寅虎', '卯兔', '辰龙', '巳蛇', '午马', '未羊', '申猴', '酉鸡', '戌狗', '亥猪'];
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+
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+// 公历转农历函数
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+export const sloarToLunar = function (sy, sm, sd) {
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+ // 输入的月份减1处理
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+ sm -= 1;
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+
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+ // debugger
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+ // 计算与公历基准的相差天数
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+ // Date.UTC()返回的是距离公历1970年1月1日的毫秒数,传入的月份需要减1
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+ let daySpan = (Date.UTC(sy, sm, sd) - Date.UTC(1949, 0, 29)) / (24 * 60 * 60 * 1000) + 1;
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+ let ly, lm, ld,lz,nly;
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+ // 确定输出的农历年份
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+ for (let j = 0; j < lunarYearArr.length; j++) {
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+ daySpan -= lunarYearDays(lunarYearArr[j]);
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+ if (daySpan <= 0) {
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+ ly = 1949 + j;
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+ // 获取农历年份确定后的剩余天数
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+ daySpan += lunarYearDays(lunarYearArr[j]);
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+ break
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+ }
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+ }
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+
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+ // 确定输出的农历月份
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+ for (let k = 0; k < lunarYearMonths(lunarYearArr[ly - 1949]).length; k++) {
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+ daySpan -= lunarYearMonths(lunarYearArr[ly - 1949])[k];
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+ if (daySpan <= 0) {
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+ // 有闰月时,月份的数组长度会变成13,因此,当闰月月份小于等于k时,lm不需要加1
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+ if (hasLeapMonth(lunarYearArr[ly - 1949]) && hasLeapMonth(lunarYearArr[ly - 1949]) <= k) {
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+ if (hasLeapMonth(lunarYearArr[ly - 1949]) < k) {
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+ lm = k;
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+ } else if (hasLeapMonth(lunarYearArr[ly - 1949]) === k) {
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+ lm = '闰' + k;
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+ } else {
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+ lm = k + 1;
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+ }
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+ } else {
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+ lm = k + 1;
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+ }
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+ // 获取农历月份确定后的剩余天数
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+ daySpan += lunarYearMonths(lunarYearArr[ly - 1949])[k];
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+ break
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+ }
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+ }
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+
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+ // 确定输出农历哪一天
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+ ld = daySpan;
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+
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+ // 将计算出来的农历月份转换成汉字月份,闰月需要在前面加上闰字
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+ if (hasLeapMonth(lunarYearArr[ly - 1949]) && (typeof (lm) === 'string' && lm.indexOf('闰') > -1)) {
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+ lm = `闰${lunarMonth[/\d/.exec(lm) - 1]}`
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+ } else {
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+ lm = lunarMonth[lm - 1];
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+ }
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+nly=ly
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+ // 将计算出来的农历年份转换为天干地支年
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+ ly = getTianGan(ly) + getDiZhi(ly);
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+ // 将计算出来的农历天数转换成汉字
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+ if (ld < 11) {
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+ ld = `${lunarDay[10]}${lunarDay[ld-1]}`
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+ } else if (ld > 10 && ld < 20) {
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+ ld = `${lunarDay[9]}${lunarDay[ld-11]}`
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+ } else if (ld === 20) {
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+ ld = `${lunarDay[1]}${lunarDay[9]}`
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+ } else if (ld > 20 && ld < 30) {
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+ ld = `${lunarDay[11]}${lunarDay[ld-21]}`
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+ } else if (ld === 30) {
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+ ld = `${lunarDay[2]}${lunarDay[9]}`
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+ }
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+ return {
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+ lunarYear: ly,
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+ lunarMonth: lm,
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+ lunarDay: ld,
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+ lunarShengXiao:lz,
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+ lunarYearNum:nly,
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+ lunarStr:`${nly}年${lm}月${ld}`,
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+ lunarStr2:`${nly}年${lm}月${ld} (${ly})`
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+ }
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+};
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+
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+export const getYearMonthDay = function (sy, sm, sd) {
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+ // 输入的月份减1处理
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+ sm -= 1;
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+
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+ // 计算与公历基准的相差天数
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+ // Date.UTC()返回的是距离公历1970年1月1日的毫秒数,传入的月份需要减1
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+ let daySpan = (Date.UTC(sy, sm, sd) - Date.UTC(1949, 0, 29)) / (24 * 60 * 60 * 1000) + 1;
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+ let ly, lm, ld,lz;
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+ // 确定输出的农历年份
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+ for (let j = 0; j < lunarYearArr.length; j++) {
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+ daySpan -= lunarYearDays(lunarYearArr[j]);
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+ if (daySpan <= 0) {
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+ ly = 1949 + j;
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+ // 获取农历年份确定后的剩余天数
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+ daySpan += lunarYearDays(lunarYearArr[j]);
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+ break
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+ }
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+ }
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+
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+ // 确定输出的农历月份
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+ for (let k = 0; k < lunarYearMonths(lunarYearArr[ly - 1949]).length; k++) {
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+ daySpan -= lunarYearMonths(lunarYearArr[ly - 1949])[k];
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+ if (daySpan <= 0) {
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+ // 有闰月时,月份的数组长度会变成13,因此,当闰月月份小于等于k时,lm不需要加1
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+ if (hasLeapMonth(lunarYearArr[ly - 1949]) && hasLeapMonth(lunarYearArr[ly - 1949]) <= k) {
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+ if (hasLeapMonth(lunarYearArr[ly - 1949]) < k) {
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+ lm = k;
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+ } else if (hasLeapMonth(lunarYearArr[ly - 1949]) === k) {
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+ lm = '闰' + k;
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+ } else {
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+ lm = k + 1;
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+ }
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+ } else {
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+ lm = k + 1;
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+ }
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+ // 获取农历月份确定后的剩余天数
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+ daySpan += lunarYearMonths(lunarYearArr[ly - 1949])[k];
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+ break
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+ }
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+ }
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+
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+ // 确定输出农历哪一天
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+ ld = daySpan;
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+
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+ // 将计算出来的农历月份转换成汉字月份,闰月需要在前面加上闰字
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+ if (hasLeapMonth(lunarYearArr[ly - 1949]) && (typeof (lm) === 'string' && lm.indexOf('闰') > -1)) {
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+ lm = `闰${lunarMonth[/\d/.exec(lm) - 1]}`
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+ } else {
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+ lm = lunarMonth[lm - 1];
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+ }
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+
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+ // 将计算出来的农历年份转换为天干地支年
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+ ly = getTianGan(ly) + getDiZhi(ly);
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+ // 将计算出来的农历天数转换成汉字
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+ if (ld < 11) {
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+ ld = `${lunarDay[10]}${lunarDay[ld-1]}`
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+ } else if (ld > 10 && ld < 20) {
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+ ld = `${lunarDay[9]}${lunarDay[ld-11]}`
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+ } else if (ld === 20) {
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+ ld = `${lunarDay[1]}${lunarDay[9]}`
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+ } else if (ld > 20 && ld < 30) {
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+ ld = `${lunarDay[11]}${lunarDay[ld-21]}`
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+ } else if (ld === 30) {
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+ ld = `${lunarDay[2]}${lunarDay[9]}`
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+ }
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+ return ld;
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+};
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+// 计算农历年是否有闰月,参数为存储农历年的16进制
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+// 农历年份信息用16进制存储,其中16进制的最后1位可以用于判断是否有闰月
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+function hasLeapMonth(ly) {
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+ // 获取16进制的最后1位,需要用到&与运算符
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+ if (ly & 0xf) {
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+ return ly & 0xf
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+ } else {
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+ return false
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+ }
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+}
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+
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+// 如果有闰月,计算农历闰月天数,参数为存储农历年的16进制
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+// 农历年份信息用16进制存储,其中16进制的第1位(0x除外)可以用于表示闰月是大月还是小月
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+function leapMonthDays(ly) {
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+ if (hasLeapMonth(ly)) {
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+ // 获取16进制的第1位(0x除外)
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+ return (ly & 0xf0000) ? 30 : 29
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+ } else {
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+ return 0
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+ }
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+}
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+
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+// 计算农历一年的总天数,参数为存储农历年的16进制
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+// 农历年份信息用16进制存储,其中16进制的第2-4位(0x除外)可以用于表示正常月是大月还是小月
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+function lunarYearDays(ly) {
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+ let totalDays = 0;
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+
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+ // 获取正常月的天数,并累加
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+ // 获取16进制的第2-4位,需要用到>>移位运算符
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+ for (let i = 0x8000; i > 0x8; i >>= 1) {
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+ let monthDays = (ly & i) ? 30 : 29;
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+ totalDays += monthDays;
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+ }
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+ // 如果有闰月,需要把闰月的天数加上
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+ if (hasLeapMonth(ly)) {
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+ totalDays += leapMonthDays(ly);
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+ }
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+
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+ return totalDays
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+}
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+
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+// 获取农历每个月的天数
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+// 参数需传入16进制数值
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+function lunarYearMonths(ly) {
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+ let monthArr = [];
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+
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+ // 获取正常月的天数,并添加到monthArr数组中
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+ // 获取16进制的第2-4位,需要用到>>移位运算符
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+ for (let i = 0x8000; i > 0x8; i >>= 1) {
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+ monthArr.push((ly & i) ? 30 : 29);
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+ }
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+ // 如果有闰月,需要把闰月的天数加上
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+ if (hasLeapMonth(ly)) {
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+ monthArr.splice(hasLeapMonth(ly), 0, leapMonthDays(ly));
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+ }
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+
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+ return monthArr;
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+}
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+
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+// 将农历年转换为天干,参数为农历年
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+function getTianGan(ly) {
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+ let tianGanKey = (ly - 3) % 10;
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+ if (tianGanKey === 0) tianGanKey = 10;
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+ return tianGan[tianGanKey - 1];
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+}
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+
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+// 将农历年转换为地支,参数为农历年
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+function getDiZhi(ly) {
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+ let diZhiKey = (ly - 3) % 12;
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+ if (diZhiKey === 0) diZhiKey = 12;
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+ return diZhi[diZhiKey - 1];
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+}
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