JavaScript output the wrong date

Posted on 2011-02-18
Last Modified: 2012-05-11
Hi all

I have this script below..
when I run the script:  alert(date1);
is outputing the wrong date.. Plus 1 month in the future? how is this possible?

function CompareDates()
    var strVon                   = document.getElementById("Fromdate").value;
    var strBis                   = document.getElementById("Todate").value;      
      var currentDate            = new Date();  
      var dt1                    = parseInt(strVon.substring(0,2),10);
    var mon1                   = parseInt(strVon.substring(3,5),10);
    var yr1                    = parseInt(strVon.substring(6,10),10);       
    var dt2                    = parseInt(strBis.substring(0,2),10);
    var mon2                   = parseInt(strBis.substring(3,5),10);
    var yr2                    = parseInt(strBis.substring(6,10),10);
    var date1                   = new Date(yr1, mon1, dt1);
    var date2                   = new Date(yr2, mon2, dt2);

      if(currentDate > date1)
        alert("To date cannot be greater than from date");
        return false;
        alert("Submitting ...");
Question by:ZURINET
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LVL 82

Accepted Solution

leakim971 earned 500 total points
ID: 34926306
month start with zero :
january  = 0
december = 11
LVL 82

Expert Comment

ID: 34926326
LVL 29

Expert Comment

ID: 34926334
The month is zero-based:

var curDate = new Date();
var mon1 = curDate.getMonth(); // 0 - Jan, 1 = Feb, 2 = Mar, etc.

Visit for a reference to the Date object.
LVL 41

Expert Comment

ID: 34926339
leakim971 is, of course, correct.

Here is some additional information for you:
and this article may be helpful:
LVL 29

Expert Comment

ID: 34926345
sheesh - great minds think, eh? Mine is just too slow this morning ;-)

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