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JavaScript写的中国农历
摘要: JavaScript写的中国农历
//==== 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
}
function YYMMDD(){
var cl = '';
if (now.getDay() == 0) cl = '';
if (now.getDay() == 6) cl = '';
return(cl+SY+'年'+(SM+1)+'月'+SD+'日');
}
function weekday(){
var day = new Array("星期日","星期一","星期二","星期三","星期四","星期五","星期六");
var cl = '';
if (now.getDay() == 0) cl = '';
if (now.getDay() == 6) cl = '';
return(cl+ day[now.getDay()]+ '');
}
//==== 中文日期
function cDay(m,d){
var nStr1 = new Array('日','一','二','三','四','五','六','七','八','九','十');
var nStr2 = new Array('初','十','廿','卅',' ');
var s;
if (m>10){s = '十'+nStr1[m-10]} else {s = nStr1[m]} s += '月'
switch (d) {
case 10:s += '初十'; break;
case 20:s += '二十'; break;
case 30:s += '三十'; break;
default:s += nStr2[Math.floor(d/10)]; s += nStr1[d%10];
}
return(s);
}
function solarDay1(){
var sDObj = new Date(SY,SM,SD);
var lDObj = new Lunar(sDObj);
var cl = '';
var tt = '【'+Animals[(SY-4)%12]+'】'+cyclical(lDObj.monCyl)+'月 '+cyclical(lDObj.dayCyl++)+'日' ;
return(cl+tt+'');
}
function solarDay2(){
var sDObj = new Date(SY,SM,SD);
var lDObj = new Lunar(sDObj);
var cl = '';
//农历BB'+(cld[d].isLeap?'闰 ':' ')+cld[d].lMonth+' 月 '+cld[d].lDay+' 日
var tt = cyclical(SY-1900+36)+'年 '+cDay(lDObj.month,lDObj.day);
return(cl+tt+'');
}
function solarDay3(){
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 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 lFtv = new Array("0101*春节","0115 元宵节","0505 端午节","0707 七夕情人节","0715 中元节","0815 中秋节","0909 重阳节","1208 腊八节","1224 小年","0100*除夕")
var sFtv = new Array("0101*元旦","0214 情人节","0308 妇女节","0309 偶今天又长一岁拉","0312 植树节","0315 消费者权益日","0401 愚人节","0418 MM的生日","0501 劳动节","0504 青年节","0512 护士节","0601 儿童节","0701 建党节 香港回归纪念",
"0801 建军节","0808 父亲节","0909 毛泽东逝世纪念","0910 教师节","0928 孔子诞辰","1001*国庆节",
"1006 老人节","1024 联合国日","1112 孙中山诞辰","1220 澳门回归纪念","1225 圣诞节","1226 毛泽东诞辰")
var sDObj = new Date(SY,SM,SD);
var lDObj = new Lunar(sDObj);
var lDPOS = new Array(3)
var festival='',solarTerms='',solarFestival='',lunarFestival='',tmp1,tmp2;
//农历节日
for(i in lFtv)
if(lFtv[i].match(/^(\d{2})(.{2})([\s\*])(.+)$/)) {
tmp1=Number(RegExp.$1)-lDObj.month
tmp2=Number(RegExp.$2)-lDObj.day
if(tmp1==0 && tmp2==0) lunarFestival=RegExp.$4
}
//国历节日
for(i in sFtv)
if(sFtv[i].match(/^(\d{2})(\d{2})([\s\*])(.+)$/)){
tmp1=Number(RegExp.$1)-(SM+1)
tmp2=Number(RegExp.$2)-SD
if(tmp1==0 && tmp2==0) solarFestival = RegExp.$4
}
//节气
tmp1 = new Date((31556925974.7*(SY-1900)+sTermInfo[SM*2+1]*60000)+Date.UTC(1900,0,6,2,5))
tmp2 = tmp1.getUTCDate()
if (tmp2==SD) solarTerms = solarTerm[SM*2+1]
tmp1 = new Date((31556925974.7*(SY-1900)+sTermInfo[SM*2]*60000)+Date.UTC(1900,0,6,2,5))
tmp2= tmp1.getUTCDate()
if (tmp2==SD) solarTerms = solarTerm[SM*2]
if(solarTerms == '' && solarFestival == '' && lunarFestival == '')
festival = '';
else
festival = '<table WIDTH=100% BORDER=0 CELLPADDING=2 CELLSPACING=0 BGCOLOR="#CCFFCC"><tr><td>'+
''+solarTerms + ' ' + solarFestival + ' ' + lunarFestival+'</td>'+
'</tr></table>';
var cl = '';
return(cl+festival+'');
}
function setCalendar(){
document.write('<table align=center CELLPADDING=2 CELLSPACING=0 border=1><tr><td bgcolor=#FEFEEF><table border=0 CELLPADDING=0 CELLSPACING=0><tr><td align=center>');
document.write(YYMMDD()+' '+weekday());
document.write('</td></tr>');
document.write('<tr><td align=center>');
document.write(solarDay1());
document.write('</td></tr><tr><td align=center>');
document.write(solarDay2());
document.write('</td></tr><tr><td>');
document.write(solarDay3());
document.write('</td></tr></table></td></tr></table>');
}
setCalendar();
//</script>