How can I count the days between two dates in javascript?

Question

Possible Duplicate:
How to calculate the number of days between two dates using javascript

I have those dates :

27/09/2011
29/10/2011

and I'd like to return the days between those dates (in the example, should be 33 days).

How can I do it on javascript (or jquery?)?

Don't think it's mentioned in the duplicate question but you could take a look at http://www.datejs.com/ — Richard Dalton, Sep 27 '11 at 14:46

score 4 · Answer 1 · answered Sep 27 '11 at 14:44

4

var daysBetween = (Date.parse(DATE1) - Date.parse(DATE2)) / (24 * 3600 * 1000);

answered Sep 27 '11 at 14:44

Igor Dymov

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It should fail : if the date is IT rather than EN the value is different :O – markzzz Sep 27 '11 at 14:57
i've just shown the way to do it – Igor Dymov Sep 27 '11 at 15:04

BNL · Accepted Answer · 2013-11-07T14:19:13.433

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function days_between(date1, date2) {

    // 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)

}

http://www.mcfedries.com/JavaScript/DaysBetween.asp

edited Nov 07 '13 at 14:19

answered Sep 27 '11 at 14:44

BNL

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This link is dead so the answer is not available to any more – user918967 Nov 05 '13 at 21:13
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Link still works for me, added code from site in answer since link only answers do suck. – BNL Nov 07 '13 at 14:20

score 0 · Answer 3 · edited Sep 30 '11 at 18:44

0

// split the date into days, months, years array
var x = "27/09/2011".split('/')
var y = "29/10/2011".split('/')

// create date objects using year, month, day
var a = new Date(x[2],x[1],x[0])
var b = new Date(y[2],y[1],y[0])

// calculate difference between dayes
var c = ( b - a )

// convert from milliseconds to days
// multiply milliseconds * seconds * minutes * hours
var d = c / (1000 * 60 * 60 * 24)

// show what you got
alert( d )

Note: I find this method safer than Date.parse() as you explicitly specify the date format being input (by splitting into year, month, day in the beginning). This is important to avoid ambiguity when 03/04/2008 could be 3rd of April, 2008 or 4th of March, 2008 depending what country your dates are coming from.

edited Sep 30 '11 at 18:44

Ruan Mendes

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answered Sep 27 '11 at 14:54

Billy Moon

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[Illicitly](http://dictionary.merriam-webster.com/dictionary/illicit)? I think you mean [explicitly](http://dictionary.merriam-webster.com/dictionary/explicit). – Joe Stefanelli Sep 27 '11 at 15:01
yes - I do mean explicitly - you are quite right – Billy Moon Sep 27 '11 at 15:04

How can I count the days between two dates in javascript?

3 Answers3