JS get current date time and other actions

var mydate = new Date (); Mydate.getyear (); Gets the current year (2-bit) mydate.getfullyear (); Get the full year (4-bit, 1970-????) Mydate.getmonth (); Get the current month (0-11, 0 for January) mydate.getdate (); Get current day (1-31) mydate.getday (); Get Current week x (0-6, 0 for Sunday) mydate.gettime (); Gets the current time (the number of milliseconds starting in 1970.1.1) mydate.gethours (); Gets the current number of hours (0-23) mydate.getminutes (); Gets the current number of minutes (0-59) mydate.getseconds (); Gets the current number of seconds (0-59) mydate.getmilliseconds (); Gets the current number of milliseconds (0-999) mydate.tolocaledatestring (); Gets the current date var mytime=mydate.tolocaletimestring (); Gets the current time mydate.tolocalestring (); Get Date and time

Date Time Script Library method list

date. Prototype.isleapyear Judging leap year Date.prototype.Format date formatting Date.prototype.DateAdd dates calculation Date.prototype.DateDiff Comparison Date difference Date.prototype.toString date to string Date.prototype.toArray date split into an array Date.prototype.DatePart Pick a part of the date Date.prototype.MaxDayOfDate the maximum number of days in the month Date.prototype.WeekNumOfYear determine the date of the year in which the first week stringtodate String to date type Isvaliddate validation date validity checkdatetime full datetime check daysbetween date days difference

JS Code:

---------------------------------------------------//Judgment Leap Year//-------------------------------------------------- -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 the year//mm/m month//w/w//dd/dd/ D/D Date//hh/hh/h/h time//mm/m min//ss/ss/s/s sec//---------------------------------------------------Date.prototype.Form at = function (formatstr) {var str = formatstr; var Week = [' Day ', ' one ', ' two ', ' three ', ' four ', ' five ', ' six ']; Str=str.replace (/yyyy| Yyyy/,this.getfullyear ()); Str=str.replace (/yy| yy/, (this.getyear ()%) >9? (This.getyear ()%). 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; } //+--------------------------------------------------- //| Two days 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 (Date.parse (dttmp) + (* number)), Case ' n ': return new Date (Date.pars E (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 ()); } } //+--------------------------------------------------- //| Comparison Date Difference dtend format is a date type or 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 (DtE nd); } switch (strinterval) {case ' s ': Return parseint ((dtend-dtstart)/+); 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 ();} } //+--------------------------------------------------- //| A 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; } //+--------------------------------------------------- //| Date Legitimacy Verification//| The format is: YYYY-MM-DD or yyyy/mm/dd//+---------------------------------------------------function isvaliddate (datestr) { var sdate=datestr.replace (/(^\s+|\s+$)/g, '); Go on both sides of the space; if (sdate== ") return true; If the format satisfies yyyy-(/) mm-(/) DD or yyyy-(/) m (/) DD or yyyy-(/) m (/) d or yyyy-(/) mm-(/) d is replaced with a '//database, the legal date can be: Yyyy-mm/dd (2003-3/ 21), the database is automatically converted to YYYY-MM-DD format var s = sdate.replace (/[\d]{}[\-/]{1}[\d]{}[\-/]{1}[\d]{}/g, "); if (s== ')//description format satisfies 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. Note leap years. ‘); return false; }} else {//alert (' Wrong date format! The format is: Yyyy-mm-dd or YYYY/MM/DD. Note leap years. ‘); return false; } return true; } //+--------------------------------------------------- //| Date Time Check//| Format: yyyy-mm-dd HH:MM:SS//+---------------------------------------------------function checkdatetime (str) {var reg = /^ (\d+)-(\d{)-(\d{) (\d{):(\d{):(\d{) $/; 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; } //+--------------------------------------------------- //| Divide the date 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//| The parameter interval represents the data type//| Y year M D Day W week WW week h N min S s//+---------------------------------------------------Date.prototype.DatePart = function (inter val) {var mydate = this; var partstr= '; var Week = [' Day ', ' one ', ' two ', ' three ', ' four ', ' five ', ' six ']; switch (interval) {case ' Y ':p artstr = Mydate.getfullyear (); break; 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 in the month of the current date//+---------------------------------------------------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; } //+--------------------------------------------------- //| Get the current date week is the week of the year//+---------------------------------------------------Date.prototype.WeekNumOfYear = function () {var mydate = this, var ary = Mydate.toarray (); var = 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; } //+--------------------------------------------------- //| The string is converted to a 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; }

To display: current date plus time (for example: 2009-06-12 12:00)

function Curenttime () {var now = new Date (), var year = Now.getfullyear ();//annual var month = Now.getmonth () + 1;//month Var da y = Now.getdate (); Day var hh = now.gethours (); When var mm = Now.getminutes (); divide var clock = year + "-"; if (month <) clock + = "0"; Clock + + month + "-"; if (Day < ten) clock + = "0"; Clock + + day + ""; if (HH <) clock + = "0"; Clock + + hh + ":"; if (mm <) clock + = ' 0 '; Clock + = mm; return (clock); }

JS get current date time and other actions