以下程序基于Jquery实现的阴阳历的转换功能，尤其是在实现日程日历管理的时候，阴阳历转换功能是比较常见的。只要将以下内容拷贝到自己的程序中，使用的时候只要调用
test._helper.GetLunarDay（"2015", "05","27"）；
输出
四月初十
GetLunarDay.js
var test = (function($) {
var test = {};
test._helper = {};
test._helper.GetLunarDay = function(YearStr, MonthStr, DayStr) {
var sDObj = new Date(parseInt(YearStr), parseInt(MonthStr) - 1,
parseInt(DayStr));
var lDObj = new Lunar(sDObj) ;//农历
return cMonth(lDObj.month) + cDay(lDObj.day);
}
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 solarMonth = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31,
30, 31);
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 Animals = new Array("鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊",
"猴", "鸡", "狗", "猪");
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 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 nStr1 = new Array('日', '一', '二', '三', '四', '五', '六', '七', '八',
'九', '十');
var nStr2 = new Array('初', '十', '廿', '卅', ' ');
var monthName = new Array("JAN", "FEB", "MAR", "APR", "MAY", "JUN",
"JUL", "AUG", "SEP", "OCT", "NOV", "DEC");
/*****************************************************************************
日期计算
*****************************************************************************/
//====================================== 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;
}
//==============================传回国历 y年某m+1月的天数
function solarDays(y, m) {
if (m == 1)
return (((y % 4 == 0) && (y % 100 != 0) || (y % 400 == 0)) ? 29
: 28);
else
return (solarMonth[m]);
}
//============================== 传入 offset 传回干支, 0=甲子
function cyclical(num) {
return (Gan[num % 10] + Zhi[num % 12])
}
//====================== 中文日期
function cDay(d) {
var s;
switch (d) {
case 10:
s = '初十';
break;
case 20:
s = '二十';
break;
break;
case 30:
s = '三十';
break;
break;
default:
s = nStr2[Math.floor(d / 10)];
s += nStr1[d % 10];
}
return (s);
}
//====================== 中文月份
function cMonth(m) {
var s;
switch (m) {
case 1:
s = '正月';
break;
case 2:
s = '二月';
break;
case 3:
s = '三月';
break;
case 4:
s = '四月';
break;
case 5:
s = '五月';
break;
case 6:
s = '六月';
break;
case 7:
s = '七月';
break;
case 8:
s = '八月';
break;
case 9:
s = '九月';
break;
case 10:
s = '十月';
break;
case 11:
s = '十一月';
break;
case 12:
s = '十二月';
break;
default:
break;
}
return (s);
}
return teworks;
})（jQuery）;