爱华网var myDate = new Date();
myDate.getYear();//获取当前年份(2位)
myDate.getFullYear();//获取完整的年份(4位,1970-????)
myDate.getMonth();//获取当前月份(0-11,0代表1月)
myDate.getDate();//获取当前日(1-31)
myDate.getDay();//获取当前星期X(0-6,0代表星期天)
myDate.getTime();//获取当前时间(从1970.1.1开始的毫秒数)
myDate.getHours();//获取当前小时数(0-23)
myDate.getMinutes();//获取当前分钟数(0-59)
myDate.getSeconds();//获取当前秒数(0-59)
myDate.getMilliseconds();//获取当前毫秒数(0-999)
myDate.toLocaleDateString();//获取当前日期
varmytime=myDate.toLocaleTimeString();//获取当前时间
myDate.toLocaleString();//获取日期与时间
日期时间脚本库方法列表
Date.prototype.isLeapYear 判断闰年
Date.prototype.Format 日期格式化
Date.prototype.DateAdd 日期计算
Date.prototype.DateDiff 比较日期差
Date.prototype.toString 日期转字符串
Date.prototype.toArray 日期分割为数组
Date.prototype.DatePart 取日期的部分信息
Date.prototype.MaxDayOfDate 取日期所在月的最大天数
Date.prototype.WeekNumOfYear 判断日期所在年的第几周
StringToDate 字符串转日期型
IsValidDate 验证日期有效性
CheckDateTime 完整日期时间检查
daysBetween 日期天数差
js代码：
//---------------------------------------------------
// 判断闰年
//---------------------------------------------------
Date.prototype.isLeapYear =function()
{
return(0==this.getYear()%4&&((this.getYear()0!=0)||(this.getYear()@0==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());
returnstr;
}
//+---------------------------------------------------
//| 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('-'));
varcha=((Date.parse(OneMonth+'/'+OneDay+'/'+OneYear)-Date.parse(TwoMonth+'/'+TwoDay+'/'+TwoYear))/86400000);
returnMath.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 (typeofdtEnd == '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()];
}
returnstr;
}
//+---------------------------------------------------
//| 日期合法性验证
//| 格式为：YYYY-MM-DD或YYYY/MM/DD
//+---------------------------------------------------
functionIsValidDate(DateStr)
{
varsDate=DateStr.replace(/(^/s+|/s+$)/g,'');//去两边空格;
if(sDate=='') returntrue;
//如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为''
//数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式
var s =sDate.replace(/[/d]{ 4,4 }[/-/]{ 1 }[/d]{ 1,2 }[/-/]{ 1 }[/d]{ 1,2}/g,'');
if (s=='')//说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D
{
var t=newDate(sDate.replace(//-/g,'/'));
var ar =sDate.split(/[-/:]/);
if(ar[0] != t.getYear() || ar[1] != t.getMonth()+1 || ar[2] !=t.getDate())
{
//alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
return false;
}
}
else
{
//alert('错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。');
return false;
}
returntrue;
}
//+---------------------------------------------------
//| 日期时间检查
//| 格式为：YYYY-MM-DD HH:MM:SS
//+---------------------------------------------------
function CheckDateTime(str)
{
var reg =/^(/d+)-(/d{ 1,2 })-(/d{ 1,2 }) (/d{ 1,2 }):(/d{ 1,2 }):(/d{ 1,2})$/;
var r =str.match(reg);
if(r==null)return false;
r[2]=r[2]-1;
var d= newDate(r[1],r[2],r[3],r[4],r[5],r[6]);
if(d.getFullYear()!=r[1])returnfalse;
if(d.getMonth()!=r[2])returnfalse;
if(d.getDate()!=r[3])returnfalse;
if(d.getHours()!=r[4])returnfalse;
if(d.getMinutes()!=r[5])returnfalse;
if(d.getSeconds()!=r[6])returnfalse;
returntrue;
}
//+---------------------------------------------------
//| 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();
returnmyArray;
}
//+---------------------------------------------------
//| 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;
varpartStr='';
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;
}
returnpartStr;
}
//+---------------------------------------------------
//| 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'));
returnresult;
}
//+---------------------------------------------------
//| 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('< scriptlanguage=VBScript/> /n');
document.write('myDate = DateValue(''+month+'-'+day+'-'+year+'')/n');
document.write('result = DatePart('ww', myDate)/n');
document.write(' /n');
returnresult;
}
//+---------------------------------------------------
//| 字符串转成日期类型
//| 格式 MM/dd/YYYY MM-dd-YYYY YYYY/MM/ddYYYY-MM-dd
//+---------------------------------------------------
function StringToDate(DateStr)
{
varconverted = Date.parse(DateStr);
var myDate =new Date(converted);
if(isNaN(myDate))
{
//var delimCahar =DateStr.indexOf('/')!=-1?'/':'-';
var arys= DateStr.split('-');
myDate = newDate(arys[0],--arys[1],arys[2]);
}
returnmyDate;
}
//今天
function countDay(){
myDate = newDate();
var todadys=myDate.getFullYear()+'-'+(parseInt(myDate.getMonth())+1)+'-'+myDate.getDate()+'00:00:00';
var todadye=myDate.getFullYear()+'-'+(parseInt(myDate.getMonth())+1)+'-'+myDate.getDate()+'23:59:59';
...
}
//本月
function countMonth(){
var d = newDate();
d = newDate(d.getFullYear(),d.getMonth()+1,0);
var months=myDate.getFullYear()+'-'+(parseInt(myDate.getMonth())+1)+'-'+'0100:00:00';
var monthe=myDate.getFullYear()+'-'+(parseInt(myDate.getMonth())+1)+'-'+d.getDate()+'23:59:59';
...
}
...
