js 时间操作 转载
Js获取当前日期时间及其它操作
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
var
mytime=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()%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 =
Datue(‘‘+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?‘/‘:‘-‘;
var
arys=
DateStr.split(‘-‘);
myDate
= new
Date(arys[0],--arys[1],arys[2]);
}
return
myDate;
}
若要显示:当前日期加时间(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(); //时
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);
}