JS get the current date time and other operations summary _javascript tips

JS get current date time and other operation summary

var mydate = new Date ();
Mydate.getyear ();    Gets the current year (2-bit)
mydate.getfullyear ();  Get full year (4-bit, 1970-????)
Mydate.getmonth ();    Get the current month (0-11, 0 for January)
mydate.getdate ();    Gets the current day (1-31)
mydate.getday ();     Get Current week x (0-6, 0 representative Sunday)
Mydate.gettime ();    Gets the current time (the number of milliseconds since 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 judgment Leap Year
Date.prototype.Format date format
Date.prototype.DateAdd Date Calculation
Date.prototype.DateDiff Comparison Date Difference
Date.prototype.toString date-to-spin string
Date.prototype.toArray date split to an array
Date.prototype.DatePart A partial information about the date
Date.prototype.MaxDayOfDate the maximum number of days from the month in which the date was taken
Date.prototype.WeekNumOfYear Determine the week of the year in which the date is
stringtodate string to date
isvaliddate validation Date validation
checkdatetime full date time check
Daysbetween date days bad

JS Code:
//---------------------------------------------------

Judge Leap Year//---------------------------------------------------Date.prototype.isLeapYear = function () {return (0= =this.getyear ()%4&& (This.getyear ()%100!=0) | |  
(This.getyear ()%400==0)); 
}//---------------------------------------------------//Date format//Format YYYY/YYYY/YY/YY = 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//---------------------------------------------------date. Prototype.  
  Format = 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; }  
 
//+--------------------------------------------------- 
//| A two-time number of 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) + (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 ()); } 
} 
 
//+--------------------------------------------------- 
//| 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 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 (); } 
} 
 
//+--------------------------------------------------- 
//| The 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 legality Verification//| Format is: YYYY-MM-DD or yyyy/mm/dd//+---------------------------------------------------function isvaliddate (datestr) {V Ar sdate=datestr.replace (/(^\s+|\s+$)/g, ");  
  Go to 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 '//database, the legal date can be: YYYY-MM/DD (2003-3/21), the database is automatically converted to the YYYY-MM-DD format var s = sdate.replace (/[\d]{4,4}[\-/]{1}[\d]{1,2}[\-/]{1}[\d]{1,2}  
  /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, '/'));  
    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 re  
  g =/^ (\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; }  
 
//+--------------------------------------------------- 
//| Dividing 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//| The parameter interval represents the data type//| Y year M month d days W week WW Week h when N minute s sec//+---------------------------------------------------Date.prototype.DatePart = function (int 
  Erval) {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 in the month of the current date//+---------------------------------------------------Date.prototype.MaxDayOfDate = function () {VA 
  R 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 the week is the yearWeek//+---------------------------------------------------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+ '); 
  document.write (' result = DatePart (' ww ', mydate) \ n '); 
  document.write (' \ n '); 
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; 
 }

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

function Curenttime ()
  { 
    var now = new Date ();
   
    var year = Now.getfullyear ();    Year
    var month = Now.getmonth () + 1;   Month
    var day = Now.getdate ();      Day
   
    var hh = now.gethours ();      When
    var mm = Now.getminutes ();     cent
   
    var clock = year + "-";
   
    if (month <)
      clock + = "0";
   
    Clock + + month + "-";
   
    if (Day <)
      Clock + = "0";
     
    Clock = day + "";
   
    if (HH <)
      clock + = "0";
     
    Clock + = hh + ":";
    if (mm <) clock + = ' 0 '; 
    Clock = mm; 
    return (clock); 
  }

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