本文实例讲述了JS简单获取当前日期和农历日期的方法。分享给大家供大家参考，具体如下：

navCal.js文件如下：

today=new Date();function initArray(){ this.length=initArray.arguments.length for(var i=0;i<this.length;i++) this[i+1]=initArray.arguments[i] } var d=new initArray( "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六");document.write(today.getFullYear(),"年",today.getMonth()+1,"月",today.getDate(),"日 ",d[today.getDay()+1]," ");calendar = new Date();month = calendar.getMonth();date = calendar.getDate();if ((month == 0) && (date == 1)) document.write("元旦");if ((month == 2) && (date == 12)) document.write("植树节");if ((month == 3) && (date == 5)) document.write("清明节");if ((month == 4) && (date == 1)) document.write("国际劳动节");if ((month == 4) && (date == 4)) document.write("青年节");if ((month == 5) && (date == 1)) document.write("国际儿童节");if ((month == 7) && (date == 1)) document.write("建军节");if ((month == 7) && (date == 16)) document.write("七夕情人节");if ((month == 9) && (date == 1)) document.write("国庆节/国际音乐节/国际老人节");if ((month == 11) && (date == 24)) document.write("平安夜");if ((month == 11) && (date == 25)) document.write("圣诞节");var CalendarData=new Array(100);var madd=new Array(12);var tgString="甲乙丙丁戊己庚辛壬癸";var dzString="子丑寅卯辰巳午未申酉戌亥";var numString="一二三四五六七八九十";var monString="正二三四五六七八九十冬腊";var weekString="日一二三四五六";var sx="鼠牛虎兔龙蛇马羊猴鸡狗猪";var cYear,cMonth,cDay,TheDate;CalendarData = new Array(0xA4B,0x5164B,0x6A5,0x6D4,0x415B5,0x2B6,0x957,0x2092F,0x497,0x60C96,0xD4A,0xEA5,0x50DA9,0x5AD,0x2B6,0x3126E, 0x92E,0x7192D,0xC95,0xD4A,0x61B4A,0xB55,0x56A,0x4155B, 0x25D,0x92D,0x2192B,0xA95,0x71695,0x6CA,0xB55,0x50AB5,0x4DA,0xA5B,0x30A57,0x52B,0x8152A,0xE95,0x6AA,0x615AA,0xAB5,0x4B6,0x414AE,0xA57,0x526,0x31D26,0xD95,0x70B55,0x56A,0x96D,0x5095D,0x4AD,0xA4D,0x41A4D,0xD25,0x81AA5,0xB54,0xB6A,0x612DA,0x95B,0x49B,0x41497,0xA4B,0xA164B, 0x6A5,0x6D4,0x615B4,0xAB6,0x957,0x5092F,0x497,0x64B, 0x30D4A,0xEA5,0x80D65,0x5AC,0xAB6,0x5126D,0x92E,0xC96,0x41A95,0xD4A,0xDA5,0x20B55,0x56A,0x7155B,0x25D,0x92D,0x5192B,0xA95,0xB4A,0x416AA,0xAD5,0x90AB5,0x4BA,0xA5B, 0x60A57,0x52B,0xA93,0x40E95);madd[0]=0;madd[1]=31;madd[2]=59;madd[3]=90;madd[4]=120;madd[5]=151;madd[6]=181;madd[7]=212;madd[8]=243;madd[9]=273;madd[10]=304;madd[11]=334;function GetBit(m,n){return (m>>n)&1;}function e2c(){TheDate= (arguments.length!=3) ? new Date() : new Date(arguments[0],arguments[1],arguments[2]);var total,m,n,k;var isEnd=false;var tmp=TheDate.getYear();if(tmp<1900){ tmp+=1900;}total=(tmp-1921)*365+Math.floor((tmp-1921)/4)+madd[TheDate.getMonth()]+TheDate.getDate()-38;if(TheDate.getYear()%4==0&&TheDate.getMonth()>1) { total++;}for(m=0;;m++){ k=(CalendarData[m]<0xfff)?11:12; for(n=k;n>=0;n--){ if(total<=29+GetBit(CalendarData[m],n)){ isEnd=true; break; } total=total-29-GetBit(CalendarData[m],n); } if(isEnd) break;}cYear=1921 + m;cMonth=k-n+1;cDay=total;if(k==12){ if(cMonth==Math.floor(CalendarData[m]/0x10000)+1){ cMonth=1-cMonth; } if(cMonth>Math.floor(CalendarData[m]/0x10000)+1){ cMonth--; }}}function GetcDateString(){var tmp="";tmp+=tgString.charAt((cYear-4)%10);tmp+=dzString.charAt((cYear-4)%12);tmp+="(";tmp+=sx.charAt((cYear-4)%12);tmp+=")年 ";if(cMonth<1){ tmp+="(闰)"; tmp+=monString.charAt(-cMonth-1);}else{ tmp+=monString.charAt(cMonth-1);}tmp+="月";tmp+=(cDay<11)?"初":((cDay<20)?"十":((cDay<30)?"廿":"三十"));if (cDay%10!=0||cDay==10){ tmp+=numString.charAt((cDay-1)%10);}return tmp;}function GetLunarDay(solarYear,solarMonth,solarDay){//solarYear = solarYear<1900?(1900+solarYear):solarYear;if(solarYear<1921 || solarYear>2020){return "";}else{ solarMonth = (parseInt(solarMonth)>0) ? (solarMonth-1) : 11; e2c(solarYear,solarMonth,solarDay); return GetcDateString();}}var D=new Date();var yy=D.getFullYear();var mm=D.getMonth()+1;var dd=D.getDate();var ww=D.getDay();var ss=parseInt(D.getTime() / 1000);if (yy<100) yy="19"+yy;function showCal(){document.write(GetLunarDay(yy,mm,dd));}showCal();

调用方法：

<script type="text/JavaScript" src="navCal.js"></script>

运行效果图如下：

PS：这里再为大家推荐几款日历相关在线工具供大家参考：

网页万年历日历：
http://tools.jb51.net/bianmin/webwannianli

在线阴历/阳历转换工具：
http://tools.jb51.net/bianmin/yinli2yangli

在线万年历日历：
http://tools.jb51.net/bianmin/wannianli

在线万年历黄历flash版：
http://tools.jb51.net/bianmin/flashwnl

另外，本站历史上的今天也有相似的农历日期显示功能：

http://tools.jb51.net/bianmin/lishi

更多关于JavaScript相关内容感兴趣的读者可查看本站专题：《JavaScript时间与日期操作技巧总结》《JavaScript错误与调试技巧总结》、《JavaScript数据结构与算法技巧总结》、《JavaScript遍历算法与技巧总结》及《JavaScript数学运算用法总结》

希望本文所述对大家JavaScript程序设计有所帮助。