How to get 30 days prior to current date

Question

I have a start calendar input box and an end calendar input box  We want defaults start calendar input box 30 days prior to current date and the end calendar input box to be the current date  Here is my date vars   var today   new Date        dd      today getDate        mm      today getMonth        yyyy    today getFullYear        month     January    February    March            April    May    June    July    August            September    October   November    December        startdate   month mm           yyyy toString      The end date would be something like var enddate   startdate - 30  Obviously this won t work   So if the current date is December 30  2011 I d want the start date to read December 1  2011   EDIT  My question was answered    sort of  Date today    and Date today   add -30   work but I need the date in the format of January 13  2012  Not Fri Jan 13 2012 10 48 56 GMT -055  EST   Any help   MORE EDIT  As of this writing it s 2018  Just use Moment js  It s the best

User · Answer

This is an ES6 version  let date   new Date   let newDate   new Date date setDate date getDate  -30   console log newDate getMonth   1         newDate getDate           newDate getFullYear

User · Answer

Try using the excellent Datejs JavaScript date library  the original is no longer maintained so you may be interested in this actively maintained fork instead    Date today   add -30  days       or    Date today   add  days -30       Edit   See also the excellent Moment js JavaScript date library   moment   subtract 30   days       or    moment   add -30   days

User · Answer

Easy  Using Vanilla JS   let days 30  this maxDateTime   new Date Date now   - days   24   60   60   1000     ISOFormat    let days 30  this maxDateTime   new Date Date now   - days   24   60   60   1000  toISOString

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Javascript can handle it without any external libraries     x000D   x000D  var today   new Date    x000D  var dateLimit   new Date new Date   setDate today getDate   - 30    x000D   x000D  document write today     lt br  gt     dateLimit  x000D   x000D   x000D

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startDate   new Date today getTime   - 30 24 60 60 1000     The  getTime   method returns a standard JS timestamp  milliseconds since Jan 1 1970  on which you can use regular math operations  which can be fed back to the Date object directly

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Get next 30 days from today   x000D   x000D  let now   new Date   x000D  console log  Today      now toUTCString    x000D  let next30days   new Date now setDate now getDate     30   x000D  console log  Next 30th day      next30days toUTCString    x000D   x000D   x000D    Get last 30 days form today   x000D   x000D  let now   new Date   x000D  console log  Today      now toUTCString    x000D  let last30days   new Date now setDate now getDate   - 30   x000D  console log  Last 30th day      last30days toUTCString    x000D   x000D   x000D

User · Answer

Simple 1 liner Vanilla Javascript code   const priorByDays   new Date Date now   - days   24   60   60   1000   For example  days   7 Assume current date   Fri Sep 18 2020 01 33 26 GMT 0530 The result would be   Fri Sep 11 2020 01 34 03 GMT 0530  The beauty of this is you can manipulate it to get result in desired type   timestamp   Date now   - days   24   60   60   1000  ISOString  new Date Date now   - 7   24   60   60   1000  toISOString

User · Answer

Try this  var today   new Date   var priorDate   new Date   setDate today getDate  -30    As noted by  Neel  this method returns in Javascript Timestamp format  To convert it back to date object  you need to pass the above to a new Date object  new Date priorDate

User · Answer

You can do that simply through 1 line of code using moment in Node JS          let lastOneMonthDate   moment   subtract 30  days   utc   toISOString     Don t want UTC format  EASIER  P      let lastOneMonthDate   moment   subtract 30  days   toISOString

User · Answer

If you aren t inclined to momentjs  you can use this   let x   new Date    x toISOString x setDate x getDate     slice 0  10   Basically it gets the current date  numeric value of date of current month  and then sets the value  Then it converts into ISO format from which I slice down the pure numeric date  i e  2019-09-23   Hope it helps someone

User · Answer

let today   new Date    let last30Days   new Date today getFullYear    today getMonth    today getDate   - 30    last30Days will be in Date Object

User · Answer

I will prefer moment js  startDate   moment   subtract 30   days   format  LL       January 29  2015  endDate   moment   format  LL       February 28  2015

User · Answer

Here s an ugly solution for you   var date   new Date new Date   setDate new Date   getDate   - 30

User · Answer

I use date js  It handles this easily and takes care of all the leap-year nastiness

[javascript] How to get 30 days prior to current date?

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