var myDate = new Date();myDate.getYear();        //獲取當前年份(2位)myDate.getFullYear();    //獲取完整的年份(4位,1970-????)myDate.getMonth();       //獲取當前月份(0-11,0代表1月)myDate.getDate();        //獲取當前日(1-31)myDate.getDay();         //獲取當前星期X(0-6,0代表星期天)myDate.getTime();        //獲取當前時間(從1970.1.1開始的毫秒數)myDate.getHours();       //獲取當前小時數(0-23)myDate.getMinutes();     //獲取當前分鐘數(0-59)myDate.getSeconds();     //獲取當前秒數(0-59)myDate.getMilliseconds();    //獲取當前毫秒數(0-999)myDate.toLocaleDateString();     //獲取當前日期var mytime=myDate.toLocaleTimeString();     //獲取當前時間myDate.toLocaleString( );        //獲取日期與時間 日期時間腳本庫方法列表Date.PRototype.isLeapYear 判斷閏年Date.prototype.Format 日期格式化Date.prototype.DateAdd 日期計算Date.prototype.DateDiff 比較日期差Date.prototype.toString 日期轉字符串Date.prototype.toArray 日期分割為數組Date.prototype.DatePart 取日期的部分信息Date.prototype.MaxDayOfDate 取日期所在月的最大天數Date.prototype.WeekNumOfYear 判斷日期所在年的第幾周StringToDate 字符串轉日期型IsValidDate 驗證日期有效性CheckDateTime 完整日期時間檢查daysBetween 日期天數差js代碼：//---------------------------------------------------  // 判斷閏年  //---------------------------------------------------  Date.prototype.isLeapYear = function()   {       return (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));   }     //---------------------------------------------------  // 日期格式化  // 格式 YYYY/yyyy/YY/yy 表示年份  // MM/M 月份  // W/w 星期  // dd/DD/d/D 日期  // hh/HH/h/H 時間  // mm/m 分鐘  // ss/SS/s/S 秒  //---------------------------------------------------  Date.prototype.Format = function(formatStr)   {       var str = formatStr;       var Week = ['日','一','二','三','四','五','六'];        str=str.replace(/yyyy|YYYY/,this.getFullYear());       str=str.replace(/yy|YY/,(this.getYear() % 100)>9?(this.getYear() % 100).toString():'0' + (this.getYear() % 100));         str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():'0' + this.getMonth());       str=str.replace(/M/g,this.getMonth());         str=str.replace(/w|W/g,Week[this.getDay()]);         str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():'0' + this.getDate());       str=str.replace(/d|D/g,this.getDate());         str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():'0' + this.getHours());       str=str.replace(/h|H/g,this.getHours());       str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():'0' + this.getMinutes());       str=str.replace(/m/g,this.getMinutes());         str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():'0' + this.getSeconds());       str=str.replace(/s|S/g,this.getSeconds());         return str;   }     //+---------------------------------------------------  //| 求兩個時間的天數差 日期格式為 YYYY-MM-dd   //+---------------------------------------------------  function daysBetween(DateOne,DateTwo)  {       var OneMonth = DateOne.substring(5,DateOne.lastIndexOf ('-'));      var OneDay = DateOne.substring(DateOne.length,DateOne.lastIndexOf ('-')+1);      var OneYear = DateOne.substring(0,DateOne.indexOf ('-'));        var TwoMonth = DateTwo.substring(5,DateTwo.lastIndexOf ('-'));      var TwoDay = DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf ('-')+1);      var TwoYear = DateTwo.substring(0,DateTwo.indexOf ('-'));        var cha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)- Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);       return Math.abs(cha);  }      //+---------------------------------------------------  //| 日期計算  //+---------------------------------------------------  Date.prototype.DateAdd = function(strInterval, Number) {       var dtTmp = this;      switch (strInterval) {           case 's' :return new Date(Date.parse(dtTmp) + (1000 * Number));          case 'n' :return new Date(Date.parse(dtTmp) + (60000 * Number));          case 'h' :return new Date(Date.parse(dtTmp) + (3600000 * Number));          case 'd' :return new Date(Date.parse(dtTmp) + (86400000 * Number));          case 'w' :return new Date(Date.parse(dtTmp) + ((86400000 * 7) * Number));          case 'q' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number*3, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());          case 'm' :return new Date(dtTmp.getFullYear(), (dtTmp.getMonth()) + Number, dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());          case 'y' :return new Date((dtTmp.getFullYear() + Number), dtTmp.getMonth(), dtTmp.getDate(), dtTmp.getHours(), dtTmp.getMinutes(), dtTmp.getSeconds());      } }    //+---------------------------------------------------  //| 比較日期差 dtEnd 格式為日期型或者有效日期格式字符串  //+---------------------------------------------------  Date.prototype.DateDiff = function(strInterval, dtEnd) {       var dtStart = this;      if (typeof dtEnd == 'string' )//如果是字符串轉換為日期型      {           dtEnd = StringToDate(dtEnd);      }      switch (strInterval) {           case 's' :return parseInt((dtEnd - dtStart) / 1000);          case 'n' :return parseInt((dtEnd - dtStart) / 60000);          case 'h' :return parseInt((dtEnd - dtStart) / 3600000);          case 'd' :return parseInt((dtEnd - dtStart) / 86400000);          case 'w' :return parseInt((dtEnd - dtStart) / (86400000 * 7));          case 'm' :return (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12) - (dtStart.getMonth()+1);          case 'y' :return dtEnd.getFullYear() - dtStart.getFullYear();      }  }    //+---------------------------------------------------  //| 日期輸出字符串，重載了系統的toString方法  //+---------------------------------------------------  Date.prototype.toString = function(showWeek)  {       var myDate= this;      var str = myDate.toLocaleDateString();      if (showWeek)      {           var Week = ['日','一','二','三','四','五','六'];          str += ' 星期' + Week[myDate.getDay()];      }      return str;  }    //+---------------------------------------------------  //| 日期合法性驗證  //| 格式為：YYYY-MM-DD或YYYY/MM/DD  //+---------------------------------------------------  function IsValidDate(DateStr)   {       var sDate=DateStr.replace(/(^/s+|/s+$)/g,''); //去兩邊空格;       if(sDate=='') return true;       //如果格式滿足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替換為''       //數據庫中，合法日期可以是:YYYY-MM/DD(2003-3/21),數據庫會自動轉換為YYYY-MM-DD格式       var s = sDate.replace(/[/d]{ 4,4 }[/-/]{ 1 }[/d]{ 1,2 }[/-/]{ 1 }[/d]{ 1,2 }/g,'');       if (s=='') //說明格式滿足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D       {           var t=new Date(sDate.replace(//-/g,'/'));           var ar = sDate.split(/[-/:]/);           if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate())           {               //alert('錯誤的日期格式！格式為：YYYY-MM-DD或YYYY/MM/DD。注意閏年。');               return false;           }       }       else       {           //alert('錯誤的日期格式！格式為：YYYY-MM-DD或YYYY/MM/DD。注意閏年。');           return false;       }       return true;   }     //+---------------------------------------------------  //| 日期時間檢查  //| 格式為：YYYY-MM-DD HH:MM:SS  //+---------------------------------------------------  function CheckDateTime(str)  {       var reg = /^(/d+)-(/d{ 1,2 })-(/d{ 1,2 }) (/d{ 1,2 }):(/d{ 1,2 }):(/d{ 1,2 })$/;       var r = str.match(reg);       if(r==null)return false;       r[2]=r[2]-1;       var d= new Date(r[1],r[2],r[3],r[4],r[5],r[6]);       if(d.getFullYear()!=r[1])return false;       if(d.getMonth()!=r[2])return false;       if(d.getDate()!=r[3])return false;       if(d.getHours()!=r[4])return false;       if(d.getMinutes()!=r[5])return false;       if(d.getSeconds()!=r[6])return false;       return true;   }     //+---------------------------------------------------  //| 把日期分割成數組  //+---------------------------------------------------  Date.prototype.toArray = function()  {       var myDate = this;      var myArray = Array();      myArray[0] = myDate.getFullYear();      myArray[1] = myDate.getMonth();      myArray[2] = myDate.getDate();      myArray[3] = myDate.getHours();      myArray[4] = myDate.getMinutes();      myArray[5] = myDate.getSeconds();      return myArray;  }    //+---------------------------------------------------  //| 取得日期數據信息  //| 參數 interval 表示數據類型  //| y 年 m月 d日 w星期 ww周 h時 n分 s秒  //+---------------------------------------------------  Date.prototype.DatePart = function(interval)  {       var myDate = this;      var partStr='';      var Week = ['日','一','二','三','四','五','六'];      switch (interval)      {           case 'y' :partStr = myDate.getFullYear();break;          case 'm' :partStr = myDate.getMonth()+1;break;          case 'd' :partStr = myDate.getDate();break;          case 'w' :partStr = Week[myDate.getDay()];break;          case 'ww' :partStr = myDate.WeekNumOfYear();break;          case 'h' :partStr = myDate.getHours();break;          case 'n' :partStr = myDate.getMinutes();break;          case 's' :partStr = myDate.getSeconds();break;      }      return partStr;  }    //+---------------------------------------------------  //| 取得當前日期所在月的最大天數  //+---------------------------------------------------  Date.prototype.MaxDayOfDate = function()  {       var myDate = this;      var ary = myDate.toArray();      var date1 = (new Date(ary[0],ary[1]+1,1));      var date2 = date1.dateAdd(1,'m',1);      var result = dateDiff(date1.Format('yyyy-MM-dd'),date2.Format('yyyy-MM-dd'));      return result;  }    //+---------------------------------------------------  //| 取得當前日期所在周是一年中的第幾周  //+---------------------------------------------------  Date.prototype.WeekNumOfYear = function()  {       var myDate = this;      var ary = myDate.toArray();      var year = ary[0];      var month = ary[1]+1;      var day = ary[2];      document.write('< script language=VBScript/> /n');      document.write('myDate = Datue(''+month+'-'+day+'-'+year+'') /n');      document.write('result = DatePart('ww', myDate) /n');      document.write(' /n');      return result;  }    //+---------------------------------------------------  //| 字符串轉成日期類型   //| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/dd YYYY-MM-dd  //+---------------------------------------------------  function StringToDate(DateStr)  {         var converted = Date.parse(DateStr);      var myDate = new Date(converted);      if (isNaN(myDate))      {           //var delimCahar = DateStr.indexOf('/')!=-1?'/':'-';          var arys= DateStr.split('-');          myDate = new Date(arys[0],--arys[1],arys[2]);      }      return myDate;  }   若要顯示:當前日期加時間(如:2009-06-12 12:00)function CurentTime(){     var now = new Date();       var year = now.getFullYear();       //年    var month = now.getMonth() + 1;     //月    var day = now.getDate();            //日       var hh = now.getHours();            //時    var mm = now.getMinutes();          //分       var clock = year + "-";       if(month < 10)        clock += "0";       clock += month + "-";       if(day < 10)        clock += "0";           clock += day + " ";       if(hh < 10)        clock += "0";           clock += hh + ":";    if (mm < 10) clock += '0';     clock += mm;     return(clock); }