万年历算法

  1<!--
  2/**//*****************************************************************************
  3                                   日期资料
  4*****************************************************************************/
  5
  6var lunarInfo=new Array(
  70x04bd8,0x04ae0,0x0a570,0x054d5,0x0d260,0x0d950,0x16554,0x056a0,0x09ad0,0x055d2,
  80x04ae0,0x0a5b6,0x0a4d0,0x0d250,0x1d255,0x0b540,0x0d6a0,0x0ada2,0x095b0,0x14977,
  90x04970,0x0a4b0,0x0b4b5,0x06a50,0x06d40,0x1ab54,0x02b60,0x09570,0x052f2,0x04970,
 100x06566,0x0d4a0,0x0ea50,0x06e95,0x05ad0,0x02b60,0x186e3,0x092e0,0x1c8d7,0x0c950,
 110x0d4a0,0x1d8a6,0x0b550,0x056a0,0x1a5b4,0x025d0,0x092d0,0x0d2b2,0x0a950,0x0b557,
 120x06ca0,0x0b550,0x15355,0x04da0,0x0a5d0,0x14573,0x052d0,0x0a9a8,0x0e950,0x06aa0,
 130x0aea6,0x0ab50,0x04b60,0x0aae4,0x0a570,0x05260,0x0f263,0x0d950,0x05b57,0x056a0,
 140x096d0,0x04dd5,0x04ad0,0x0a4d0,0x0d4d4,0x0d250,0x0d558,0x0b540,0x0b5a0,0x195a6,
 150x095b0,0x049b0,0x0a974,0x0a4b0,0x0b27a,0x06a50,0x06d40,0x0af46,0x0ab60,0x09570,
 160x04af5,0x04970,0x064b0,0x074a3,0x0ea50,0x06b58,0x055c0,0x0ab60,0x096d5,0x092e0,
 170x0c960,0x0d954,0x0d4a0,0x0da50,0x07552,0x056a0,0x0abb7,0x025d0,0x092d0,0x0cab5,
 180x0a950,0x0b4a0,0x0baa4,0x0ad50,0x055d9,0x04ba0,0x0a5b0,0x15176,0x052b0,0x0a930,
 190x07954,0x06aa0,0x0ad50,0x05b52,0x04b60,0x0a6e6,0x0a4e0,0x0d260,0x0ea65,0x0d530,
 200x05aa0,0x076a3,0x096d0,0x04bd7,0x04ad0,0x0a4d0,0x1d0b6,0x0d250,0x0d520,0x0dd45,
 210x0b5a0,0x056d0,0x055b2,0x049b0,0x0a577,0x0a4b0,0x0aa50,0x1b255,0x06d20,0x0ada0)
 22
 23var solarMonth=new Array(31,28,31,30,31,30,31,31,30,31,30,31);
 24var Gan=new Array("甲","乙","丙","丁","戊","己","庚","辛","壬","癸");
 25var Zhi=new Array("子","丑","寅","卯","辰","巳","午","未","申","酉","戌","亥");
 26var Animals=new Array("鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪");
 27var 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")
 28var 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)
 29var nStr1 = new Array('日','一','二','三','四','五','六','七','八','九','十')
 30var nStr2 = new Array('初','十','廿','卅','　')
 31var monthName = new Array("1 月","2 月","3 月","4 月","5 月","6 月","7 月","8 月","9 月","10 月","11 月","12 月");
 32
 33//国历节日 *表示放假日
 34var sFtv = new Array(
 35"0101*元旦",
 36"0214 情人节",
 37"0308 妇女节",
 38"0312 植树节",
 39"0315 消费者权益日",
 40"0401 愚人节",
 41"0501 劳动节",
 42"0504 青年节",
 43"0512 护士节",
 44"0601 儿童节",
 45"0701 建党节",
 46"0801 建军节",
 47"0808 父亲节",
 48"0909 ***逝世纪念",
 49"0910 教师节",
 50"0928 孔子诞辰",
 51"1001*国庆节",
 52"1006 老人节",
 53"1024 联合国日",
 54"1112 孙中山诞辰",
 55"1220 澳门回归",
 56"1225 圣诞节",
 57"1226 ***诞辰")
 58
 59//农历节日 *表示放假日
 60var lFtv = new Array(
 61"0101*农历春节",
 62"0115 元宵节",
 63"0505 端午节",
 64"0707 七夕情人节",
 65"0815 中秋节",
 66"0909 重阳节",
 67"1208 腊八节",
 68"1224 小年",
 69"0100*除夕")
 70
 71//某月的第几个星期几
 72var wFtv = new Array(
 73"0520 母亲节")
 74
 75/**//*****************************************************************************
 76                                      日期计算
 77*****************************************************************************/
 78
 79//====================================== 传回农历 y年的总天数
 80function lYearDays(y) {
 81   var i, sum = 348
 82   for(i=0x8000; i>0x8; i>>=1) sum += (lunarInfo[y-1900] & i)? 1: 0
 83   return(sum+leapDays(y))
 84}
 85
 86//====================================== 传回农历 y年闰月的天数
 87function leapDays(y) {
 88   if(leapMonth(y))  return((lunarInfo[y-1900] & 0x10000)? 30: 29)
 89   else return(0)
 90}
 91
 92//====================================== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
 93function leapMonth(y) {
 94   return(lunarInfo[y-1900] & 0xf)
 95}
 96
 97//====================================== 传回农历 y年m月的总天数
 98function monthDays(y,m) {
 99   return( (lunarInfo[y-1900] & (0x10000>>m))? 30: 29 )
100}
101
102//====================================== 算出农历, 传入日期物件, 传回农历日期物件
103//                                       该物件属性有 .year .month .day .isLeap .yearCyl .dayCyl .monCyl
104function Lunar(objDate) {
105
106   var i, leap=0, temp=0
107   var baseDate = new Date(1900,0,31)
108   var offset   = (objDate - baseDate)/86400000
109
110   this.dayCyl = offset + 40
111   this.monCyl = 14
112
113   for(i=1900; i<2050 && offset>0; i++) {
114      temp = lYearDays(i)
115      offset -= temp
116      this.monCyl += 12
117   }
118
119   if(offset<0) {
120      offset += temp;
121      i--;
122      this.monCyl -= 12
123   }
124
125   this.year = i
126   this.yearCyl = i-1864
127
128   leap = leapMonth(i) //闰哪个月
129   this.isLeap = false
130
131   for(i=1; i<13 && offset>0; i++) {
132      //闰月
133      if(leap>0 && i==(leap+1) && this.isLeap==false)
134         { --i; this.isLeap = true; temp = leapDays(this.year); }
135      else
136         { temp = monthDays(this.year, i); }
137
138      //解除闰月
139      if(this.isLeap==true && i==(leap+1)) this.isLeap = false
140
141      offset -= temp
142      if(this.isLeap == false) this.monCyl ++
143   }
144
145   if(offset==0 && leap>0 && i==leap+1)
146      if(this.isLeap)
147         { this.isLeap = false; }
148      else
149         { this.isLeap = true; --i; --this.monCyl;}
150
151   if(offset<0){ offset += temp; --i; --this.monCyl; }
152
153   this.month = i
154   this.day = offset + 1
155}
156
157//==============================传回国历 y年某m+1月的天数
158function solarDays(y,m) {
159   if(m==1)
160      return(((y%4 == 0) && (y%100 != 0) || (y%400 == 0))? 29: 28)
161   else
162      return(solarMonth[m])
163}
164//============================== 传入 offset 传回干支, 0=甲子
165function cyclical(num) {
166   return(Gan[num%10]+Zhi[num%12])
167}
168
169//============================== 月历属性
170function calElement(sYear,sMonth,sDay,week,lYear,lMonth,lDay,isLeap,cYear,cMonth,cDay) {
171
172      this.isToday    = false;
173      //国历
174      this.sYear      = sYear;
175      this.sMonth     = sMonth;
176      this.sDay       = sDay;
177      this.week       = week;
178      //农历
179      this.lYear      = lYear;
180      this.lMonth     = lMonth;
181      this.lDay       = lDay;
182      this.isLeap     = isLeap;
183      //干支
184      this.cYear      = cYear;
185      this.cMonth     = cMonth;
186      this.cDay       = cDay;
187
188      this.color      = '';
189
190      this.lunarFestival = ''; //农历节日
191      this.solarFestival = ''; //国历节日
192      this.solarTerms    = ''; //节气
193
194}
195
196//===== 某年的第n个节气为几日(从0小寒起算)
197function sTerm(y,n) {
198   var offDate = new Date( ( 31556925974.7*(y-1900) + sTermInfo[n]*60000  ) + Date.UTC(1900,0,6,2,5) )
199   return(offDate.getUTCDate())
200}
201
202//============================== 传回月历物件 (y年,m+1月)
203function calendar(y,m) {
204
205   var sDObj, lDObj, lY, lM, lD=1, lL, lX=0, tmp1, tmp2
206   var lDPOS = new Array(3)
207   var n = 0
208   var firstLM = 0
209
210   sDObj = new Date(y,m,1)            //当月一日日期
211
212   this.length    = solarDays(y,m)    //国历当月天数
213   this.firstWeek = sDObj.getDay()    //国历当月1日星期几
214
215
216   for(var i=0;i<this.length;i++) {
217
218      if(lD>lX) {
219         sDObj = new Date(y,m,i+1)    //当月一日日期
220         lDObj = new Lunar(sDObj)     //农历
221         lY    = lDObj.year           //农历年
222         lM    = lDObj.month          //农历月
223         lD    = lDObj.day            //农历日
224         lL    = lDObj.isLeap         //农历是否闰月
225         lX    = lL? leapDays(lY): monthDays(lY,lM) //农历当月最後一天
226
227         if(n==0) firstLM = lM
228         lDPOS[n++] = i-lD+1
229      }
230
231      //sYear,sMonth,sDay,week,
232      //lYear,lMonth,lDay,isLeap,
233      //cYear,cMonth,cDay
234      this[i] = new calElement(y, m+1, i+1, nStr1[(i+this.firstWeek)%7],
235                               lY, lM, lD++, lL,
236                               cyclical(lDObj.yearCyl) ,cyclical(lDObj.monCyl), cyclical(lDObj.dayCyl++) )
237
238
239      if((i+this.firstWeek)%7==0)   this[i].color = 'red'  //周日颜色
240      if((i+this.firstWeek)%14==13) this[i].color = 'red'  //周休二日颜色
241   }
242
243   //节气
244   tmp1=sTerm(y,m*2  )-1
245   tmp2=sTerm(y,m*2+1)-1
246   this[tmp1].solarTerms = solarTerm[m*2]
247   this[tmp2].solarTerms = solarTerm[m*2+1]
248   if(m==3) this[tmp1].color = 'red' //清明颜色
249
250   //国历节日
251   for(i in sFtv)
252      if(sFtv[i].match(/^(\d{2})(\d{2})([\s\*])(.+)$/))
253         if(Number(RegExp.$1)==(m+1)) {
254            this[Number(RegExp.$2)-1].solarFestival += RegExp.$4 + ' '
255            if(RegExp.$3=='*') this[Number(RegExp.$2)-1].color = 'red'
256         }
257
258   //月周节日
259   for(i in wFtv)
260      if(wFtv[i].match(/^(\d{2})(\d)(\d)([\s\*])(.+)$/))
261         if(Number(RegExp.$1)==(m+1)) {
262            tmp1=Number(RegExp.$2)
263            tmp2=Number(RegExp.$3)
264            this[((this.firstWeek>tmp2)?7:0) + 7*(tmp1-1) + tmp2 - this.firstWeek].solarFestival += RegExp.$5 + ' '
265         }
266
267   //农历节日
268   for(i in lFtv)
269      if(lFtv[i].match(/^(\d{2})(.{2})([\s\*])(.+)$/)) {
270         tmp1=Number(RegExp.$1)-firstLM
271         if(tmp1==-11) tmp1=1
272         if(tmp1 >=0 && tmp1<n) {
273            tmp2 = lDPOS[tmp1] + Number(RegExp.$2) -1
274            if( tmp2 >= 0 && tmp2<this.length) {
275               this[tmp2].lunarFestival += RegExp.$4 + ' '
276               if(RegExp.$3=='*') this[tmp2].color = 'red'
277            }
278         }
279      }
280
281   //黑色星期五
282   if((this.firstWeek+12)%7==5)
283      this[12].solarFestival += '黑色星期五 '
284
285   //今日
286   if(y==tY && m==tM) this[tD-1].isToday = true;
287
288}
289
290//====================== 中文日期
291function cDay(d){
292   var s;
293
294   switch (d) {
295      case 10:
296         s = '初十'; break;
297      case 20:
298         s = '二十'; break;
299         break;
300      case 30:
301         s = '三十'; break;
302         break;
303      default :
304         s = nStr2[Math.floor(d/10)];
305         s += nStr1[d%10];
306   }
307   return(s);
308}
309
310///////////////////////////////////////////////////////////////////////////////
311
312var cld;
313
314function drawCld(SY,SM) {
315   var i,sD,s,size;
316   cld = new calendar(SY,SM);
317
318   if(SY>1874 && SY<1909) yDisplay = '光绪' + (((SY-1874)==1)?'元':SY-1874)+'年'
319   if(SY>1908 && SY<1912) yDisplay = '宣统' + (((SY-1908)==1)?'元':SY-1908)+'年'
320   if(SY>1911 && SY<1950) yDisplay = '民国' + (((SY-1911)==1)?'元':SY-1911)+'年'
321   if(SY>1949) yDisplay = ' ' 
322   
323   
324
325   GZ.innerHTML = yDisplay +' 农历' + cyclical(SY-1900+36) + '年 &nbsp;&nbsp;【'+Animals[(SY-4)%12]+'】';
326
327   YMBG.innerHTML = "&nbsp;" + SY + "<BR>&nbsp;" + monthName[SM];
328
329
330   for(i=0;i<42;i++) {
331
332      sObj=eval('SD'+ i);
333      lObj=eval('LD'+ i);
334
335      sObj.className = '';
336
337      sD = i - cld.firstWeek;
338
339      if(sD>-1 && sD<cld.length) { //日期内
340         sObj.innerHTML = sD+1;
341
342         if(cld[sD].isToday) sObj.className = 'todyaColor'; //今日颜色
343
344         sObj.style.color = cld[sD].color; //国定假日颜色
345
346         if(cld[sD].lDay==1) //显示农历月
347            lObj.innerHTML = '<b>'+(cld[sD].isLeap?'闰':'') + cld[sD].lMonth + '月' + (monthDays(cld[sD].lYear,cld[sD].lMonth)==29?'小':'大')+'</b>';
348         else //显示农历日
349            lObj.innerHTML = cDay(cld[sD].lDay);
350
351         s=cld[sD].lunarFestival;
352         if(s.length>0) { //农历节日
353            if(s.length>6) s = s.substr(0, 4)+'…';
354            s = s.fontcolor('red');
355         }
356         else { //国历节日
357            s=cld[sD].solarFestival;
358            if(s.length>0) {
359               size = (s.charCodeAt(0)>0 && s.charCodeAt(0)<128)?8:4;
360               if(s.length>size+2) s = s.substr(0, size)+'…';
361               s = s.fontcolor('blue');
362            }
363            else { //廿四节气
364               s=cld[sD].solarTerms;
365               if(s.length>0) s = s.fontcolor('limegreen');
366            }
367         }
368         if(s.length>0) lObj.innerHTML = s;
369
370      }
371      else { //非日期
372         sObj.innerHTML = '';
373         lObj.innerHTML = '';
374      }
375   }
376}
377
378
379function changeCld() {
380   var y,m;
381   y=CLD.SY.selectedIndex+1900;
382   m=CLD.SM.selectedIndex;
383   drawCld(y,m);
384}
385
386function pushBtm(K) {
387   switch (K){
388      case 'YU' :
389         if(CLD.SY.selectedIndex>0) CLD.SY.selectedIndex--;
390         break;
391      case 'YD' :
392         if(CLD.SY.selectedIndex<149) CLD.SY.selectedIndex++;
393         break;
394      case 'MU' :
395         if(CLD.SM.selectedIndex>0) {
396            CLD.SM.selectedIndex--;
397         }
398         else {
399            CLD.SM.selectedIndex=11;
400            if(CLD.SY.selectedIndex>0) CLD.SY.selectedIndex--;
401         }
402         break;
403      case 'MD' :
404         if(CLD.SM.selectedIndex<11) {
405            CLD.SM.selectedIndex++;
406         }
407         else {
408            CLD.SM.selectedIndex=0;
409            if(CLD.SY.selectedIndex<149) CLD.SY.selectedIndex++;
410         }
411         break;
412      default :
413         CLD.SY.selectedIndex=tY-1900;
414         CLD.SM.selectedIndex=tM;
415   }
416   changeCld();
417}
418
419
420
421var Today = new Date();
422var tY = Today.getFullYear();
423var tM = Today.getMonth();
424var tD = Today.getDate();
425//////////////////////////////////////////////////////////////////////////////
426
427var width = "130";
428var offsetx = 2;
429var offsety = 16;
430
431var x = 135;
432var y = 260;
433var snow = 0;
434var sw = 0;
435var cnt = 0;
436
437var dStyle;
438//document.onmousemove = mEvn;
439
440//显示详细日期资料
441function mOvr(v) {
442   var s,festival;
443   var sObj=eval('SD'+ v);
444   var d=sObj.innerHTML-1;
445
446      //sYear,sMonth,sDay,week,
447      //lYear,lMonth,lDay,isLeap,
448      //cYear,cMonth,cDay
449
450   if(sObj.innerHTML!='') {
451
452      //sObj.style.cursor = 's-resize';   //s-resize
453
454      if(cld[d].solarTerms == '' && cld[d].solarFestival == '' && cld[d].lunarFestival == '')
455         festival = '';
456      else
457         festival = '<TABLE WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 BGCOLOR="#CCFFCC"><TR><TD>'+
458         '<FONT COLOR="#000000" STYLE="font-size:9pt;">'+cld[d].solarTerms + ' ' + cld[d].solarFestival + ' ' + cld[d].lunarFestival+'</FONT></TD>'+
459         '</TR></TABLE>';
460
461      s= '<TABLE WIDTH="130" BORDER=0 CELLPADDING="2" CELLSPACING=0 BGCOLOR="#000066"><TR><TD>' +
462         '<TABLE WIDTH=100% BORDER=0 CELLPADDING=0 CELLSPACING=0><TR><TD ALIGN="right"><FONT COLOR="#99CCFF" STYLE="font-size:9pt;">'+
463         cld[d].sYear+' 年 '+cld[d].sMonth+' 月 '+cld[d].sDay+' 日<br>星期'+cld[d].week+'<br>'+
464         '<font color="violet">农历'+(cld[d].isLeap?'闰 ':' ')+cld[d].lMonth+' 月 '+cld[d].lDay+' 日</font><br>'+
465         '<font color="yellow">'+cld[d].cYear+'年 '+cld[d].cMonth+'月 '+cld[d].cDay + '日</font>'+
466         '</FONT></TD></TR></TABLE>'+ festival +'</TD></TR></TABLE>';
467
468
469      document.all["detail"].innerHTML = s;
470
471       if (snow == 0) {
472         dStyle.left = x+offsetx-(width/2);
473         dStyle.top = y+offsety;
474           dStyle.visibility = "visible";
475           snow = 1;
476       }
477    }
478}
479
480//清除详细日期资料
481function mOut() {  }
482
483//取得位置
484function mEvn() {
485   x=event.x;
486   y=event.y;
487    if (document.body.scrollLeft)
488       {x=event.x+document.body.scrollLeft; y=event.y+document.body.scrollTop;}
489    if (snow){
490      dStyle.left = x+offsetx-(width/2)
491      dStyle.top = y+offsety
492    }
493}
494
495///////////////////////////////////////////////////////////////////////////
496
497function changeTZ() {
498   CITY.innerHTML = CLD.TZ.value.substr(6)
499   setCookie("TZ",CLD.TZ.selectedIndex)
500}
501
502function tick() {
503   var today
504   today = new Date()
505   Clock.innerHTML = today.toLocaleString().replace(/(年|月)/g, "/").replace(/日/, "");
506   Clock.innerHTML = TimeAdd(today.toGMTString(), CLD.TZ.value)
507   window.setTimeout("tick()", 1000);
508}
509
510function setCookie(name, value) {
511    var today = new Date()
512    var expires = new Date()
513    expires.setTime(today.getTime() + 1000*60*60*24*365)
514    document.cookie = name + "=" + escape(value)    + "; expires=" + expires.toGMTString()
515}
516
517function getCookie(Name) {
518   var search = Name + "="
519   if(document.cookie.length > 0) {
520      offset = document.cookie.indexOf(search)
521      if(offset != -1) {
522         offset += search.length
523         end = document.cookie.indexOf(";", offset)
524         if(end == -1) end = document.cookie.length
525         return unescape(document.cookie.substring(offset, end))
526      }
527      else return ""
528   }
529}
530
531/////////////////////////////////////////////////////////
532
533function initial() {
534   dStyle = detail.style;
535   CLD.SY.selectedIndex=tY-1900;
536   CLD.SM.selectedIndex=tM;
537   drawCld(tY,tM);
538
539   CLD.TZ.selectedIndex=getCookie("TZ");
540   changeTZ();
541   tick();
542}
543
544
545
546//-->
547</SCRIPT>