Javascript Date formatting related actions

1. Related extension functions

---------------------------------------------------//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 week//dd/dd/d/d date hh/hh/h/h time//mm/m min//ss/ss/s/s Sec//---------------------------------------------------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 ()%)); str=str.replace (/mm/, (this.getmonth () + 1) >9? ( This.getmonth () + 1). toString (): ' 0 ' + (this.getmonth () + 1)); str=str.replace (/m/g,this.getmonth () + 1); 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.togmtstring ()) + (* number)); n ': return new date (date.parse (dttmp.togmtstring ()) + (60000 * number)), case ' H ': return new date (date.parse (dttmp.togmts Tring ()) + (3600000 * number), case ' d ': return new Date (date.parse (dttmp.togmtstring ()) + (86400000 * number), case ' W ': return new Date (date.parse (dttmp.togmtstring ()) + ((86400000 * 7) * number))//fixme The following two kinds of increase in the cross-year is Abnormal//case ' Q ': return new D Ate (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 (dtend); }switch (strinterval) {case ' s ': return parseint ((dtend-dtstart)/+); case ' n ': return parseint ((DTEND-DTSTART)/6 0000); 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 ()-dtst Art.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;};

2. Call format

Formatted date var date=new date (); var res=date. Format ("yyyy-mm-dd HH:mm:ss  week w"), Console.info (res), var date1=new  Date (),//add 2 weeks var date2=date1. DateAdd (' W ', 2);//find the date difference var dif=daysbetween (date1. Format ("yyyy-mm-dd"), date2. Format ("yyyy-mm-dd")) console.info (dif);//compare date difference var datediff=date1. DateDiff (' d ', date2); console.info (DateDiff);//tostringconsole.info (date1.tostring ())//determine If it is a leap year console.info ( Date1.isleapyear ())

3. Results

2014-10-08 10:13:25  Wednesday 14132014/10/8false

Original: http://blog.csdn.net/whzhaochao/article/details/39890321

Javascript Date formatting related actions