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js 时间函数及相关运算大全

2017-06-17 09:19 423 查看

设置	描述
y	年
q	季度
m	月
d	日
w	周
h	小时
n	分钟
s	秒
ms	毫秒

//+---------------------------------------------------

//| 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;

&n
20037
bsp; 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:2012-06-12 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);

}

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标签： js javascript 时间函数

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js 时间函数 及相关运算大全

js 时间函数及相关运算大全