微信小程式，擷取農曆日期方法

在要用到農曆日期的.js裡加入代碼

Page({
  data: {
    Nongli:0,
    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
  ],
    chineseNumber:[
    "一", "二", "三", "四", "五", "六", "七", "八", "九", "十", "冬", "十二"
  ],
    lunarDate:'',
    },

  getLunarDate: function() {
    var self = this;
    var yearCyl,monCyl,dayCyl;
    var leapMonth = 0;
    var date = new Date('1900/1/31');
    var curDate =new Date();
    // 求出和1900年1月31日相差的天數
    var offset = parseInt( (curDate.getTime() - date.getTime()) / 86400000 );
    dayCyl = offset + 40;
    monCyl = 14;
    // 用offset減去每農曆年的天數
    // 計算當天是農曆第幾天
    // i最終結果是農曆的年份
    // offset是當年的第幾天
    var iYear, daysOfYear = 0;
    for (iYear = 1900; iYear < 2050 && offset > 0; iYear++) {
      daysOfYear = self.yearDays(iYear);
      offset -= daysOfYear;
      monCyl += 12;
    }
    if (offset < 0) {
      offset += daysOfYear;
      iYear--;
      monCyl -= 12;
    }
    yearCyl = iYear - 1864;
    leapMonth = self.leapMonth(iYear); // 閏哪個月,1-12
    var leap = false; // 預設值
    // 用當年的天數offset,逐個減去每月（農曆）的天數，求出當天是本月的第幾天
    var iMonth, daysOfMonth = 0;
    for (iMonth = 1; iMonth < 13 && offset > 0; iMonth++) {
      // 閏月
      if (leapMonth > 0 && iMonth == (leapMonth + 1) && !leap) {
        --iMonth;
        leap = true;
        daysOfMonth = self.leapDays(iYear);
      } else
        daysOfMonth = self.monthDays(iYear, iMonth);

      offset -= daysOfMonth;
      // 解除閏月
      if (leap && iMonth == (leapMonth + 1))
        leap = false;
      if (!leap)
        monCyl++;
    } 
    // offset為0時，并且剛才計算的月份是閏月，要校正
    if (offset == 0 && leapMonth > 0 && iMonth == leapMonth + 1) {
      if (leap) {
        leap = false;
      } else {
        leap = true;
        --iMonth;
        --monCyl;
      }
    }
    // offset小于0時，也要校正
    if (offset < 0) {
      offset += daysOfMonth;
      --iMonth;
      --monCyl;
    }
    var newday = self.getChinaDayString(offset + 1);
    var newmonth = self.data.chineseNumber[iMonth - 1];
    self.setData({
      lunarDate: newmonth + '月' + newday
    })
    //把日期整合成一個字元串
    var nongli=iYear+'年'+newmonth + '月' + newday;
    //把nongli指派給date裡的Nongli,才能在html中使用
    this.setData({
      Nongli:nongli
    })
  },

//***上面的方法調用下面的方法***

  yearDays: function (y) {
    var self = this;
    var i, sum = 348;
    for (i = 0x8000; i > 0x8; i >>= 1) {
      if ((self.data.lunarInfo[y - 1900] & i) != 0)
        sum += 1;
    }
    return (sum + self.leapDays(y));
  },
  leapDays: function(y){
    var self = this;
    if (self.leapMonth(y) != 0) {
      if ((self.data.lunarInfo[y - 1900] & 0x10000) != 0)
        return 30;
      else
        return 29;
    } else
      return 0;
  },
  leapMonth:function(y) {
    var self = this;
    return self.data.lunarInfo[y - 1900] & 0xf;
  },
  monthDays:function(y,m){
    if ((this.data.lunarInfo[y - 1900] & (0x10000 >> m)) == 0)
      return 29;
    else
      return 30;
  },
  getChinaDayString:function(day){
  	var self = this;
    var chineseTen = [ "初", "十", "廿", "卅"];
    var n = day % 10 == 0 ? 9 : day % 10 - 1;
    if (day > 30)
      return "";
    if (day == 10)
      return "初十";
    else
     return chineseTen[parseInt(day/10)] + self.data.chineseNumber[n];
  },

  /**
   * 生命周期函數--監聽頁面加載
   */
  onLoad: function (options) {
    //頁面加載就調用擷取農曆的方法
   this.getLunarDate();
  }
})
           

html

效果圖

代碼為學習整合而來，學習處為: 【微信小程式】擷取農曆及星期.