Copy Code code as follows:
JavaScript Document
//---------------------------------------------------
Judging leap years
//---------------------------------------------------
Date.prototype.isLeapYear = function () {
Return (0==this.getyear ()%4&& (This.getyear ()%100!=0) | | (This.getyear ()%400==0));
}
//---------------------------------------------------
Date formatting
Format Yyyy/yyyy/yy/yy represents year
Mm/m Month
W/W Week
dd/dd/d/d Date
hh/hh/h/h time
mm/m minutes
SS/SS/S/S seconds
//---------------------------------------------------
An extension to date that converts date to a string of the specified format
Months (m), days (d), hours (h), minutes (m), seconds (s), quarter (q) can be used with 1-2 placeholders,
Year (y) you can use 1-4 placeholders, milliseconds (s) to use only 1 placeholders (1-3-digit digits)
Example:
(New Date ()). Format ("Yyyy-mm-dd hh:mm:ss. S ") ==> 2006-07-02 08:09:04.423
(New Date ()). Format ("yyyy-m-d h:m:s.s") ==> 2006-7-2 8:9:4.18
Date.prototype.Format = function (FMT)
{//author:meizz
var o = {
"m+": This.getmonth () +1,//month
"D+": this.getdate (),//day
"h+": this.gethours (),//hour
"h+": this.gethours (),//hour
"m+": this.getminutes (),//min
"S+": This.getseconds (),//sec
"q+": Math.floor (This.getmonth () +3)/3),//Quarter
"S": this.getmilliseconds ()//MS
};
if (/(y+)/.test (FMT))
Fmt=fmt.replace (Regexp.$1, (this.getfullyear () + ""). substr (4-regexp.$1.length));
For (var k in O)
if (new RegExp ("+ K +")). Test (FMT)
FMT = Fmt.replace (regexp.$1, (regexp.$1.length==1)? (O[k]): (("+ o[k]"). substr (("" + o[k). length));
return FMT;
}
/**
* An extension to date that converts date to a string of the specified format
* Month (M), Day (d), 12 hours (h), 24 hours (h), minutes (m), seconds (s), Week (E), quarter (q) can be 1-2 placeholders
* Year (Y) can be 1-4 placeholders, milliseconds (S) can only use 1 placeholders (1-3-digit digits)
* Eg:
* (New Date ()). Pattern ("Yyyy-mm-dd hh:mm:ss. S ") ==> 2006-07-02 08:09:04.423
* (New Date ()). Pattern ("Yyyy-mm-dd E HH:mm:ss") ==> 2009-03-10 II 20:09:04
* (New Date ()). Pattern ("Yyyy-mm-dd EE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04
* (New Date ()). Pattern ("Yyyy-mm-dd EEE hh:mm:ss") ==> 2009-03-10 Tuesday 08:09:04
* (New Date ()). Pattern ("yyyy-m-d h:m:s.s") ==> 2006-7-2 8:9:4.18
*/
Date.prototype.pattern=function (FMT) {
var o = {
"m+": This.getmonth () +1,//month
"D+": this.getdate (),//day
"h+": this.gethours ()%12 = 0? 12:this.gethours ()%12,//hour
"h+": this.gethours (),//hour
"m+": this.getminutes (),//min
"S+": This.getseconds (),//sec
"q+": Math.floor (This.getmonth () +3)/3),//Quarter
"S": this.getmilliseconds ()//MS
};
var week = {
"0": "/u65e5",
"1": "/u4e00",
"2": "/u4e8c",
"3": "/u4e09",
"4": "/u56db",
"5": "/u4e94",
"6": "/U516D"
};
if (/(y+)/.test (FMT)) {
Fmt=fmt.replace (Regexp.$1, (this.getfullyear () + ""). substr (4-regexp.$1.length));
}
if (/(e+)/.test (FMT)) {
Fmt=fmt.replace (regexp.$1, (regexp.$1.length>1)? (regexp.$1.length>2?) "/u661f/u671f": "/u5468"): "") +week[this.getday () + ""]);
}
For (var k in O) {
if (new RegExp ("+ K +") "). Test (FMT)) {
FMT = Fmt.replace (regexp.$1, (regexp.$1.length==1)? (O[k]): (("+ o[k]"). substr (("" + o[k). length));
}
}
return FMT;
}
//+---------------------------------------------------
//| The number of days for two time difference date format is 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);
}
//+---------------------------------------------------
//| Date Calculation
//+---------------------------------------------------
DATE.PROTOTYPE.DATEADD = function (strinterval, number) {
var dttmp = this;
Switch (strinterval) {
Case ' s ': return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()), Dttmp.getdate (), dttmp.gethours (), dttmp.getminutes (), Dttmp.getseconds () +number); Seconds
Case ' n ': return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()), Dttmp.getdate (), dttmp.gethours (), dttmp.getminutes () +number, Dttmp.getseconds ()); Part
Case ' H ': return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()), Dttmp.getdate (), dttmp.gethours () +number, Dttmp.getminutes (), dttmp.getseconds ()); When
Case ' d ': return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()), Dttmp.getdate () +number, dttmp.gethours (), Dttmp.getminutes (), dttmp.getseconds ()); Days
Case ' W ': Return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()), Dttmp.getdate () +number*7, dttmp.gethours (), Dttmp.getminutes (), dttmp.getseconds ()); Week
Case ' Q ': return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()) + number*3, Dttmp.getdate (), dttmp.gethours (), Dttmp.getminutes (), dttmp.getseconds ());/quarter
Case ' m ': return new Date (Dttmp.getfullyear (), (Dttmp.getmonth ()) + number, dttmp.getdate (), dttmp.gethours (), Dttmp.getminutes (), dttmp.getseconds ()); Month
Case ' Y ': Return new Date ((dttmp.getfullyear () + number), Dttmp.getmonth (), Dttmp.getdate (), dttmp.gethours (), Dttmp.getminutes (), dttmp.getseconds ()); Years
}
}
//+---------------------------------------------------
//| Compare Date Difference dtend format is a date type or a valid date format string
//+---------------------------------------------------
Date.prototype.DateDiff = function (Strinterval, dtend) {
var dtstart = this;
if (typeof dtend = = ' string ')//if the string is converted to a date type
{
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 ();
}
}
//+---------------------------------------------------
//| Date output string that overloads the system's ToString method
//+---------------------------------------------------
Date.prototype.toString = function (Showweek)
{
var mydate= this;
var str = mydate.tolocaledatestring ();
if (Showweek)
{
var Week = [' Day ', ' one ', ' two ', ' three ', ' four ', ' five ', ' six '];
STR + + ' Week ' + week[mydate.getday ()];
}
return str;
}
//+---------------------------------------------------
//| Validation of date legality
//| Format is: YYYY-MM-DD or YYYY/MM/DD
//+---------------------------------------------------
function Isvaliddate (DATESTR)
{
var sdate=datestr.replace (/(^\s+|\s+$)/g, ""); Go to both sides of the space;
if (sdate== ') return true;
If the format satisfies the yyyy-(/) mm-(/) DD or yyyy-(/) m (/) DD or yyyy-(/) m (/) d or yyyy-(/) mm-(/) d, replace with '
database, the legal date can be: Yyyy-mm/dd (2003-3/21), and the database is automatically converted to YYYY-MM-DD format
var s = sdate.replace (/[\d]{4,4}[\-/]{1}[\d]{1,2}[\-/]{1}[\d]{1,2}/g, ");
if (s== ')//description format meets YYYY-MM-DD or YYYY-M-DD or yyyy-m-d or 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 (' Wrong date format! The format is: Yyyy-mm-dd or YYYY/MM/DD. Notice leap year. ');
return false;
}
}
Else
{
Alert (' Wrong date format! The format is: Yyyy-mm-dd or YYYY/MM/DD. Notice leap year. ');
return false;
}
return true;
}
//+---------------------------------------------------
//| Date Time Check
//| Format is: 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;
}
//+---------------------------------------------------
//| Split dates into groups
//+---------------------------------------------------
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;
}
//+---------------------------------------------------
//| Get Date data information
//| Parameter interval representing data types
//| Y year M month D Day W week WW Week h when N minutes s sec
//+---------------------------------------------------
Date.prototype.DatePart = function (interval)
{
var mydate = this;
var partstr= ';
var Week = [' Day ', ' one ', ' two ', ' three ', ' four ', ' five ', ' six '];
Switch (interval)
{
Case ' y ':p artstr = Mydate.getfullyear ();
Case ' m ':p artstr = Mydate.getmonth () +1;break;
Case ' d ':p artstr = Mydate.getdate ();
Case ' W ':p artstr = Week[mydate.getday ()];break;
Case ' ww ':p artstr = Mydate.weeknumofyear ();
Case ' h ':p artstr = mydate.gethours ();
Case ' n ':p artstr = Mydate.getminutes ();
Case ' s ':p artstr = Mydate.getseconds ();
}
return partstr;
}
//+---------------------------------------------------
//| Gets the maximum number of days of the month where the current date is
//+---------------------------------------------------
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;
}
//+---------------------------------------------------
//| string is converted to date type
//| Format 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;
}
Page validation Code
Copy Code code as follows:
<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
<meta http-equiv= "Content-type" content= "text/html; charset=gb2312 "/>
<script src= "Timedata.js" type= "Text/javascript" ></script>
<script type= "Text/javascript" >
var nowtime= new Date ();
function Newdatetime () {
Nowtime=nowtime. DATEADD ("H", 35);
Str=nowtime. Format ("Yyyy-mm-dd HH:mm:ss");
alert (str);
}
</script>
<title> Untitled Document </title>
<body>
<input type= "button" title= "format" onclick= "Newdatetime ()" value= "Click to view"/>
</body>
