How to add number of days to today s date

Question

I need to be able to add 1  2   5 or 10 days to today s date using jQuery

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Pure JS solution  with date formatted YYYY-mm-dd format   x000D   x000D  var someDate   new Date  2014-05-14    x000D  someDate setDate someDate getDate     15     number  of days to add  e x  15 days x000D  var dateFormated   someDate toISOString   substr 0 10   x000D  console log dateFormated   x000D   x000D   x000D

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x000D   x000D  function addDays n   x000D      var t   new Date    x000D      t setDate t getDate     n    x000D      var month    0   t getMonth   1   x000D      var date    0  t getDate    x000D      month   month slice -2   x000D      date   date slice -2   x000D       var date   date      month      t getFullYear    x000D      alert date   x000D    x000D   x000D  addDays 5   x000D   x000D   x000D

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Here is a solution that worked for me   function calduedate ndays        var newdt   new Date    var chrday  var chrmnth      newdt setDate newdt getDate     parseInt ndays         var newdate   newdt getFullYear        if newdt getMonth    lt  10           newdate   newdate  -   0  newdt getMonth         else          newdate   newdate  -  newdt getMonth              if newdt getDate    lt  10           newdate   newdate  -   0  newdt getDate         else          newdate   newdate  -  newdt getDate               alert  newdate   newdate

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The accepted answer here gave me unpredictable results  sometimes weirdly adding months and years   The most reliable way I could find was found here Add days to Javascript Date object  and also increment month  var dayOffset   20  var millisecondOffset   dayOffset   24   60   60   1000  december setTime december getTime     millisecondOffset      EDIT  Even though it has worked for some people  I don t think it is entirely correct  I would recommend going with a more popular answer or using something like http   momentjs com

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This is for 5 days   var myDate   new Date new Date   getTime    5 24 60 60 1000      You don t need JQuery  you can do it in JavaScript  Hope you get it

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I found that JavaScript can return a correct date when you use new Date nYear  nMonth  nDate   with the over days of that month  Try to see the result of a dDate variable when you use this   var dDate   new Date 2012  0  34        the result is 3 Feb 2012    I have a SkipDate function to share       function DaysOfMonth nYear  nMonth            switch  nMonth                case 0         January                 return 31  break              case 1         February                 if   nYear   4     0                        return 29                                    else                       return 28                                     break              case 2         March                 return 31  break              case 3         April                 return 30  break              case 4         May                 return 31  break              case 5         June                 return 30  break              case 6         July                 return 31  break              case 7         August                 return 31  break              case 8         September                 return 30  break              case 9         October                 return 31  break              case 10         November                 return 30  break              case 11         December                 return 31  break                        function SkipDate dDate  skipDays            var nYear   dDate getFullYear            var nMonth   dDate getMonth            var nDate   dDate getDate            var remainDays   skipDays          var dRunDate   dDate           while  remainDays  gt  0                remainDays month   DaysOfMonth nYear  nMonth  - nDate              if  remainDays  gt  remainDays month                    remainDays   remainDays - remainDays month - 1                  nDate   1                  if  nMonth  lt  11    nMonth   nMonth   1                    else                       nMonth   0                      nYear   nYear   1                                               else                   nDate   nDate   remainDays                  remainDays   0                             dRunDate   Date nYear  nMonth  nDate                     return new Date nYear  nMonth  nDate

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If the times in the Date are not needed  then you can simply use the date object s methods to extract the Month Year and Day and add  n  number of days to the Day part   var n 5    number of days to add   var today new Date      Today s Date var requiredDate new Date today getFullYear   today getMonth   today getDate   n    Ref Mozilla Javascript GetDate  Edit  Ref  Mozilla JavaScript Date

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UPDATE  Consider reading this before you proceed    Moment js Install moment js from here  npm     npm i --save moment Bower     bower install --save moment Next  var date   moment                add 2  d     replace 2 with number of days you want to add              toDate      convert it to a Javascript Date Object if you like  Link Ref   http   momentjs com docs   manipulating add  Moment js is an amazing Javascript library to manage Date objects and extremely light weight at 40kb  Good Luck

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Why not simply use  function addDays theDate  days        return new Date theDate getTime     days 24 60 60 1000      var newDate   addDays new Date    5     or -5 to remove 5 days

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You could extend the javascript Date object like this  Date prototype addDays   function days        this setDate this getDate     parseInt days        return this       and in your javascript code you could call  var currentDate   new Date       to add 4 days to current date currentDate addDays 4

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you can try this and don t need JQuery  timeSolver js   For example  add 5 day on today   var newDay   timeSolver add new Date   5  day      You also can add by hour  month   etc  please see for more infomation

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The prototype-solution from Krishna Chytanya is very nice  but needs a minor but important improvement  The days param must be parsed as Integer to avoid weird calculations when days is a String like  1    I needed several hours to find out  what went wrong in my application    Date prototype addDays   function days        this setDate this getDate     parseInt days        return this       Even if you do not use this prototype function  Always be sure to have an Integer when using setDate

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I ve found this to be a pain in javascript   Check out this link that helped me   Have you ever thought of extending the date object     http   pristinecoder com Blog post javascript-formatting-date-in-javascript        Date Format 1 2 3     c  2007-2009 Steven Levithan  lt stevenlevithan com gt     MIT license       Includes enhancements by Scott Trenda  lt scott trenda net gt     and Kris Kowal  lt cixar com  kris kowal  gt        Accepts a date  a mask  or a date and a mask     Returns a formatted version of the given date     The date defaults to the current date time     The mask defaults to dateFormat masks default       var dateFormat   function          var token    d 1 4  m 1 4  yy   yy     HhMsTt   1   LloSZ                  g          timezone     b    PMCEA  SDP T    Pacific Mountain Central Eastern Atlantic     Standard Daylight Prevailing  Time    GMT UTC     -   d 4     b g          timezoneClip      -  dA-Z  g          pad   function  val  len                val   String val               len   len    2              while  val length  lt  len  val    0    val              return val                     Regexes and supporting functions are cached through closure     return function  date  mask  utc            var dF   dateFormat              You can t provide utc if you skip other args  use the  UTC   mask prefix          if  arguments length    1  amp  amp  Object prototype toString call date       object String    amp  amp     d  test date                 mask   date              date   undefined                        Passing date through Date applies Date parse  if necessary         date   date   new Date date    new Date          if  isNaN date   throw SyntaxError  invalid date             mask   String dF masks mask     mask    dF masks  default                 Allow setting the utc argument via the mask         if  mask slice 0  4      UTC                  mask   mask slice 4               utc   true                     var     utc    getUTC     get               d   date      Date                  D   date      Day                  m   date      Month                  y   date      FullYear                  H   date      Hours                  M   date      Minutes                  s   date      Seconds                  L   date      Milliseconds                  o   utc   0   date getTimezoneOffset                flags                     d     d                  dd    pad d                   ddd   dF i18n dayNames D                   dddd  dF i18n dayNames D   7                   m     m   1                  mm    pad m   1                   mmm   dF i18n monthNames m                   mmmm  dF i18n monthNames m   12                   yy    String y  slice 2                   yyyy  y                  h     H   12    12                  hh    pad H   12    12                   H     H                  HH    pad H                   M     M                  MM    pad M                   s     s                  ss    pad s                   l     pad L  3                   L     pad L  gt  99   Math round L   10    L                   t     H  lt  12    a      p                   tt    H  lt  12    am     pm                   T     H  lt  12    A      P                   TT    H  lt  12    AM     PM                   Z     utc    UTC     String date  match timezone           pop   replace timezoneClip                       o      o  gt  0    -           pad Math floor Math abs o    60    100   Math abs o    60  4                   S       th    st    nd    rd   d   10  gt  3   0    d   100 - d   10    10    d   10                          return mask replace token  function   0                return  0 in flags   flags  0     0 slice 1   0 length - 1                               Some common format strings dateFormat masks          default         ddd mmm dd yyyy HH MM ss       shortDate        m d yy       mediumDate       mmm d  yyyy       longDate         mmmm d  yyyy       fullDate         dddd  mmmm d  yyyy       shortTime        h MM TT       mediumTime       h MM ss TT       longTime         h MM ss TT Z       isoDate          yyyy-mm-dd       isoTime          HH MM ss       isoDateTime      yyyy-mm-dd T HH MM ss       isoUtcDateTime   UTC yyyy-mm-dd T HH MM ss Z          Internationalization strings dateFormat i18n         dayNames             Sun    Mon    Tue    Wed    Thu    Fri    Sat            Sunday    Monday    Tuesday    Wednesday    Thursday    Friday    Saturday             monthNames             Jan    Feb    Mar    Apr    May    Jun    Jul    Aug    Sep    Oct    Nov    Dec            January    February    March    April    May    June    July    August    September    October    November    December               For convenience    Date prototype format   function  mask  utc        return dateFormat this  mask  utc

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You can use JavaScript  no jQuery required   var someDate   new Date    var numberOfDaysToAdd   6  someDate setDate someDate getDate     numberOfDaysToAdd      Formatting to dd mm yyyy    var dd   someDate getDate    var mm   someDate getMonth     1  var y   someDate getFullYear     var someFormattedDate   dd        mm        y

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You can use this library  Datejs  open-source JavaScript Date Library

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Date prototype addDays   function days        var dat   new Date this valueOf     days   24   60   60   1000        return dat

[javascript] How to add number of days to today's date?

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