获取一年的农历日期js代码
时间: 2023-07-18 08:32:54 浏览: 59
以下是获取一年的农历日期的 JavaScript 代码:
```javascript
// 农历数据
var lunarInfo = [
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
];
// 获取某年的所有农历日期
function getLunarDates(year) {
var lunarDates = [];
var start = new Date(year, 0, 1); // 当年的第一天
var end = new Date(year, 11, 31); // 当年的最后一天
var lunarYear = getLunarYear(year); // 当年的农历年份
// 遍历当年每一天
for (var i = start; i <= end; i.setDate(i.getDate() + 1)) {
var lunarDate = getLunarDate(i.getFullYear(), i.getMonth() + 1, i.getDate()); // 获取农历日期
var lunarMonth = lunarDate.month; // 农历月份
var lunarDay = lunarDate.day; // 农历日期
// 如果是闰月,则在闰月前面添加一个“闰”字
if (lunarMonth < 0) {
lunarMonth = -lunarMonth;
lunarDates.push("闰" + lunarMonth + "月" + getLunarDay(lunarDay));
} else {
lunarDates.push(lunarMonth + "月" + getLunarDay(lunarDay));
}
}
return lunarDates;
}
// 获取某一天的农历日期
function getLunarDate(year, month, day) {
var isLeap = false; // 是否是闰月
var leapMonth = 0; // 闰月月份
var offset = (new Date(year, month - 1, day).getTime() - new Date(1900, 0, 31).getTime()) / 86400000; // 计算天数偏移量
// 遍历农历年份的每个月,计算出对应的农历月份和日期
for (var i = 1900; i < 2100 && offset > 0; i++) {
var yearDays = getLunarYearDays(i); // 当年的农历天数
offset -= yearDays; // 减去当年的农历天数
if (offset < 0) break;
// 计算闰月
leapMonth = getLunarLeapMonth(i);
if (leapMonth > 0 && i == leapMonth + 1900) {
isLeap = true;
yearDays = getLunarLeapMonthDays(i);
}
// 减去当月的天数
offset -= yearDays;
if (offset < 0) break;
}
// 计算农历月份和日期
var month = i - 1900;
var year = isLeap ? "闰" + month : month;
var day = offset + yearDays;
// 如果是闰月,则 month 取相反数
if (leapMonth == month && isLeap) {
month = -month;
}
return {
year: year,
month: month,
day: day
};
}
// 获取农历年份
function getLunarYear(year) {
var i;
var leap = 0;
var temp = 0;
// 计算从 1900 年到今年的总天数
for (i = 1900; i <= year && temp < 590000; i++) {
temp = getLunarYearDays(i);
leap = getLunarLeapMonth(i);
}
// 如果今年有闰月,返回闰月月份,否则返回 0
if (year == i - 1) {
return leap;
} else {
return 0;
}
}
// 获取某年的农历天数
function getLunarYearDays(year) {
var i;
var sum = 348;
for (i = 0x8000; i > 0x8; i >>= 1) {
sum += (lunarInfo[year - 1900] & i) ? 1 : 0;
}
return sum + getLunarLeapMonthDays(year);
}
// 获取某年的闰月月份,如果没有闰月则返回 0
function getLunarLeapMonth(year) {
return lunarInfo[year - 1900] & 0xf;
}
// 获取某年的闰月天数,如果没有闰月则返回 0
function getLunarLeapMonthDays(year) {
if (getLunarLeapMonth(year)) {
return (lunarInfo[year - 1900] & 0x10000) ? 30 : 29;
} else {
return 0;
}
}
// 获取农历日期的中文表示
function getLunarDay(day) {
var chineseTen = ["", "十", "二十", "三十"];
var chineseNumber = ["零", "一", "二", "三", "四", "五", "六", "七", "八", "九"];
var ten = parseInt(day / 10);
var unit = day % 10;
return chineseTen[ten] + chineseNumber[unit];
}
```
使用方法:
```javascript
// 获取今年的所有农历日期
var lunarDates = getLunarDates(new Date().getFullYear());
console.log(lunarDates); // ["1月初一", "1月初二", "1月初三", "1月初四", "1月初五", ...]
```