JS Date plugin datehelp Get this month, three months, this year's date _javascript tips

Recently read some about object-oriented knowledge, the most recent work in doing statistical queries need to use this month, nearly three months, this year's date range, so the following with object-oriented thinking to write a date plug-in, we can use for reference.

Directly through the new DATEHELP, you can call the

var mydate = new Datehelp ({
date: ' 2015-02-01 ',//, starting from date:
' Yyyy/mm/dd '
});

Mydate.getthismonth ();
Mydate.getthreemonth ();
Mydate.getthisyear ();

Datehelp.js Plugin

/** * Through calls can be obtained this month, nearly three months, this year's date * @param obj * @constructor/function datehelp (obj) {/*var obj = {date: ' 2015-02-01 ',//from this date the type: ' Month ',//is calculated forward by month and day: Years (year), months (month), Days (day) value: ' 14 ',//forward calculated values, month and day format: ' YYYY/MM/DD '//date format}*
 /this.date = obj.date;
 This.type = Obj.type; This.value = Obj.value = = undefined?
 obj.value:0; This.format = Obj.format = = undefined?

 Obj.format: ' Yyyy/mm/dd ';
  Date and non-date formats get the year/day if (this.date instanceof date) {///processing the DATE function of the This.year = This.date.getFullYear ();
  This.month = This.date.getMonth () +1;
 This.day = This.date.getDate ();
  }else{//handling the incoming this.year = this.date.substr (0, 4) of the non-date function;
  This.month = This.date.substr (5, 2);
 This.day = This.date.substr (8, 2); } DateHelp.prototype.beforeDate = function (type, value) {var _type = type | | this.type, _value = value | | this.val

 UE, _year = this.year, _month = this.month, _day = This.day;
 if (_type = = ' Year ' | | | _type = = ' Years ') {_year = _value; }else if (_type = = ' Month ' | |
  _type = = ' month ') {_year-= parseint (_VALUE/12);
  _month-= _value% 12;
   if (_month <= 0) {_year = 1;
  _month + 12; }else if (_type = = ' Day ' | | | | | _type = = ' Days ') {}else {} var date = new Date (_year, _month-1, _day) return THIS.FO
Rmatdate (date, this.format); } DateHelp.prototype.formatDate = function (date,fmt) {var o = {"m+": Date.getmonth () +1,//month "d+": date.getd
  Ate (),//day "h+": date.gethours (),//h "m+": date.getminutes (),//min "s+": Date.getseconds (),//sec
 "q+": Math.floor (Date.getmonth () +3)/3),//Quarter "S": date.getmilliseconds ()//millisecond};
 if (/(y+)/.test (FMT)) Fmt=fmt.replace (Regexp.$1, (date.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; } DateHelp.prototype.getThisMonth = function () {var-i = new Date (This.year,THIS.MONTH-1);

 var last = new Date (this.year, this.month, 0);

Return This.formatdate (A/This.format) + "-" + this.formatdate (last, This.format);
DateHelp.prototype.getThreeMonth = function () {return this.beforedate (' month ', 3) + "-" + this.beforedate (' Day ', 0);
 } DateHelp.prototype.getThisYear = function () {var = new Date (this.year, 0, 1);

 var last = new Date (this.year, 11, 31);


Return This.formatdate (A/This.format) + "-" + this.formatdate (last, This.format);

/*//example var mydate = new Datehelp ({date: ' 2015-02-01 ',////) to start Computing format: ' YYYY/MM/DD '});
Console.log (Mydate.getthismonth ());
Console.log (Mydate.getthreemonth ());
 Console.log (Mydate.getthisyear ());

HTML Test Code

<! DOCTYPE html>
 
 

I hope this article will help you learn about JavaScript programming.