JavaScript - Dates are not equal

Question

No clue why I'm getting two different dates for a code below

        var aDate = '12/31/2014';
        var bDate = new Date(aDate);
        var cDate = bDate.setMonth(bDate.getMonth() + 3);
        var calDate = new Date(cDate);
        var yc = calDate.getFullYear(), mc = calDate.getMonth(), dc = calDate.getDate();
        alert(calDate + ' ' + mc+'/'+dc+'/'+yc);

For me mc/dc/yc should be same day as calDate

JSFiddle

You're forgetting that javascript months are zero-based. JS month #2 is real-world month #3 — Marc B
– Marc B, Commented Dec 11, 2014 at 21:56

sebnukem · Accepted Answer · 2014-12-11 22:03:45Z

3

Month is 0-based:

mc = calDate.getMonth()+1

edited Dec 11, 2014 at 22:03

answered Dec 11, 2014 at 21:55

sebnukem

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2 Comments

JackTheKnife Over a year ago

Wow, that is interesting

JackTheKnife Over a year ago

OK, found it: 0=January, 1=February etc.

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