How to calculate the number of days between two dates

Question

I am calculating the number of days between the  from  and  to  date  For example  if the from date is 13 04 2010 and the to date is 15 04 2010 the result should be  How do I get the result using JavaScript

User · Answer

Here is my implementation   function daysBetween one  another      return Math round Math abs   one  -   another   8 64e7         lt date gt  does the type coercion to the integer representation and has the same effect as  lt date gt  getTime   and 8 64e7 is the number of milliseconds in a day

User · Answer

const oneDay   24   60   60   1000     hours minutes seconds milliseconds const firstDate   new Date 2008  1  12   const secondDate   new Date 2008  1  22    const diffDays   Math round Math abs  firstDate - secondDate    oneDay

User · Answer

Here is a function that does this   function days between date1  date2            The number of milliseconds in one day     const ONE DAY   1000   60   60   24          Calculate the difference in milliseconds     const differenceMs   Math abs date1 - date2           Convert back to days and return     return Math round differenceMs   ONE DAY

User · Answer

From my little date difference calculator   var startDate   new Date 2000  1-1  1       2000-01-01 var endDate     new Date                    Today     Calculate the difference of two dates in total days function diffDays d1  d2      var ndays    var tv1   d1 valueOf        msec since 1970   var tv2   d2 valueOf       ndays    tv2 - tv1    1000   86400    ndays   Math round ndays - 0 5     return ndays      So you would call   var nDays   diffDays startDate  endDate      Full source at http   david tribble com src javascript jstimespan html    Addendum  The code can be improved by changing these lines     var tv1   d1 getTime        msec since 1970   var tv2   d2 getTime

User · Answer

Here s what I use   If you just subtract the dates  it won t work across the Daylight Savings Time Boundary  eg April 1 to April 30 or Oct 1 to Oct 31    This drops all the hours to make sure you get a day and eliminates any DST problem by using UTC   var nDays        Date UTC EndDate getFullYear    EndDate getMonth    EndDate getDate    -                  Date UTC StartDate getFullYear    StartDate getMonth    StartDate getDate       86400000    as a function   function DaysBetween StartDate  EndDate         The number of milliseconds in all UTC days  no DST    const oneDay   1000   60   60   24        A day in UTC always lasts 24 hours  unlike in other time formats    const start   Date UTC EndDate getFullYear    EndDate getMonth    EndDate getDate       const end   Date UTC StartDate getFullYear    StartDate getMonth    StartDate getDate           so it s safe to divide by 24 hours   return  start - end    oneDay

User · Answer

Adjusted to allow  for daylight saving differences  try this     function daysBetween date1  date2         adjust diff for for daylight savings  var hoursToAdjust   Math abs date1 getTimezoneOffset    60  - Math abs date2 getTimezoneOffset    60       apply the tz offset  date2 addHours hoursToAdjust            The number of milliseconds in one day     var ONE DAY   1000   60   60   24         Convert both dates to milliseconds     var date1 ms   date1 getTime       var date2 ms   date2 getTime           Calculate the difference in milliseconds     var difference ms   Math abs date1 ms - date2 ms          Convert back to days and return     return Math round difference ms ONE DAY         you ll want this addHours function too   Date prototype addHours  function h       this setHours this getHours   h       return this

User · Answer

I have written this solution for another post who asked  how to calculate the difference between two dates  so I share what I have prepared      Here are the two dates to compare var date1    2011-12-24   var date2    2012-01-01       First we split the values to arrays date1 0  is the year   1  the month and  2  the day date1   date1 split  -    date2   date2 split  -        Now we convert the array to a Date object  which has several helpful methods date1   new Date date1 0   date1 1   date1 2    date2   new Date date2 0   date2 1   date2 2        We use the getTime   method and get the unixtime  in milliseconds  but we want seconds  therefore we divide it through 1000  date1 unixtime   parseInt date1 getTime     1000   date2 unixtime   parseInt date2 getTime     1000       This is the calculated difference in seconds var timeDifference   date2 unixtime - date1 unixtime      in Hours var timeDifferenceInHours   timeDifference   60   60      and finaly  in days    var timeDifferenceInDays   timeDifferenceInHours    24   alert timeDifferenceInDays     You can skip some steps in the code  I have written it so to make it easy to understand   You ll find a running example here  http   jsfiddle net matKX

[javascript] How to calculate the number of days between two dates?

Examples related to javascript

Examples related to html

Examples related to date