Js는 현재 날짜와 시간 및 기타 작업 구현 code_time과 날짜를 가져옵니다.

myDate.getYear(); //현재 연도(2자리) 가져오기
myDate.getFullYear(); //전체 연도 가져오기(4자리, 1970-????)
myDate.getMonth(); //현재 월을 가져옵니다(0-11, 0은 1월을 나타냄)
myDate.getDate(); //현재 날짜(1-31)를 가져옵니다.
myDate.getDay(); //현재 주 X를 가져옵니다(0-6, 0은 일요일을 나타냄)
myDate.getTime(); //현재 시간을 가져옵니다(1970.1.1 이후의 밀리초 수)
myDate.getHours(); //현재 시간 가져오기(0-23)
myDate.getMinutes(); //현재 분 가져오기(0-59)
myDate.getSeconds(); //현재 초(0-59) 가져오기
myDate.getMilliseconds(); //현재 밀리초(0-999)를 가져옵니다.
myDate.toLocaleDateString(); //현재 날짜 가져오기
var mytime=myDate.toLocaleTimeString(); //현재 시간 가져오기
myDate.toLocaleString( ); //날짜 및 시간 가져오기

날짜 및 시간 스크립트 라이브러리 방법 목록

Date.prototype.isLeapYear가 윤년을 결정합니다
Date.prototype.Format 날짜 형식
Date.prototype.Date날짜 계산 추가
Date.prototype.DateDiff는 날짜 차이를 비교합니다
Date.prototype.toString 날짜를 문자열로 변환
Date.prototype.toArray는 날짜를 배열로 분할합니다
Date.prototype.DatePart는 날짜 정보의 일부를 가져옵니다
Date.prototype.MaxDayOfDate는 해당 날짜의 해당 월의 최대 일수를 가져옵니다
Date.prototype.WeekNumOfYear는 날짜가 있는 주를 결정합니다
StringToDate 문자열을 날짜 유형으로
IsValidDate는 날짜 유효성을 확인합니다
CheckDateTime 날짜 및 시간 확인 완료
days날짜와 일수 간의 차이

//--------------------------------------------------- 
// 判断闰年 
//--------------------------------------------------- 
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 时间 
// mm/m 分钟 
// 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; 
} 
//+--------------------------------------------------- 
//| 求两个时间的天数差 日期格式为 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); 
} 
//+--------------------------------------------------- 
//| 日期计算 
//+--------------------------------------------------- 
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()); 
} 
} 
//+--------------------------------------------------- 
//| 比较日期差 dtEnd 格式为日期型或者 有效日期格式字符串 
//+--------------------------------------------------- 
Date.prototype.DateDiff = function(strInterval, dtEnd) { 
var dtStart = this; 
if (typeof dtEnd == 'string' )//如果是字符串转换为日期型 
{ 
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(); 
} 
} 
//+--------------------------------------------------- 
//| 日期输出字符串，重载了系统的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; 
} 
//+--------------------------------------------------- 
//| 日期合法性验证 
//| 格式为：YYYY-MM-DD或YYYY/MM/DD 
//+--------------------------------------------------- 
function IsValidDate(DateStr) 
{ 
var sDate=DateStr.replace(/(^\s+|\s+$)/g,''); //去两边空格; 
if(sDate=='') return true; 
//如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为'' 
//数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式 
var s = sDate.replace(/[\d]{ 4,4 }[\-/]{ 1 }[\d]{ 1,2 }[\-/]{ 1 }[\d]{ 1,2 }/g,''); 
if (s=='') //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D 
{ 
var t=new Date(sDate.replace(/\-/g,'/')); 
var ar = sDate.split(/[-/:]/); 
if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] != t.getDate()) 
{ 
//alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。'); 
return false; 
} 
} 
else 
{ 
//alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。'); 
return false; 
} 
return true; 
} 
//+--------------------------------------------------- 
//| 日期时间检查 
//| 格式为：YYYY-MM-DD HH:MM:SS 
//+--------------------------------------------------- 
function CheckDateTime(str) 
{ 
var reg = /^(\d+)-(\d{ 1,2 })-(\d{ 1,2 }) (\d{ 1,2 }):(\d{ 1,2 }):(\d{ 1,2 })$/; 
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; 
} 
//+--------------------------------------------------- 
//| 把日期分割成数组 
//+--------------------------------------------------- 
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; 
} 
//+--------------------------------------------------- 
//| 取得日期数据信息 
//| 参数 interval 表示数据类型 
//| y 年 m月 d日 w星期 ww周 h时 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; 
} 
//+--------------------------------------------------- 
//| 取得当前日期所在月的最大天数 
//+--------------------------------------------------- 
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; 
} 
//+--------------------------------------------------- 
//| 取得当前日期所在周是一年中的第几周 
//+--------------------------------------------------- 
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 = DateValue(''+month+'-'+day+'-'+year+'') \n'); 
document.write('result = DatePart('ww', myDate) \n'); 
document.write(' \n'); 
return result; 
} 
//+--------------------------------------------------- 
//| 字符串转成日期类型 
//| 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&#63;'/':'-'; 
var arys= DateStr.split('-'); 
myDate = new Date(arys[0],--arys[1],arys[2]); 
} 
return myDate; 
}