Js get the current date time and other operations __js

Http://www.cnblogs.com/carekee/articles/1678041.html

var mydate = new Date ();
Mydate.getyear (); Get Current year (2-bit)
Mydate.getfullyear (); Get full year (4-bit, 1970-????)
Mydate.getmonth (); Get Current month (0-11, 0 for January)
Mydate.getdate (); Get the current day (1-31)
Mydate.getday (); Get Current week x (0-6, 0 for Sunday)
Mydate.gettime (); Gets the current time (number of milliseconds since 1970.1.1)
Mydate.gethours (); Get the current number of hours (0-23)
Mydate.getminutes (); Get the current number of minutes (0-59)
Mydate.getseconds (); Get the current number of seconds (0-59)
Mydate.getmilliseconds (); Get current number of milliseconds (0-999)
Mydate.tolocaledatestring (); Get Current date
var mytime=mydate.tolocaletimestring (); Get 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-turn string
Date.prototype.toArray date split into arrays
Date.prototype.DatePart some information about the date
Date.prototype.MaxDayOfDate the maximum number of days of the month from which the date is taken
Date.prototype.WeekNumOfYear the first weeks of the year in which the date is judged
Stringtodate String Turn Date type
Isvaliddate Validation Date Validity
Checkdatetime Full Date Time check
Daysbetween Date Days Bad

JS Code:

//---------------------------------------------------
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
//---------------------------------------------------
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;
}

//+---------------------------------------------------
//| 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) {