Krypton - 1 year ago 82
jQuery Question

# Jquery Countdown how to calculate remaining Months from 0-12?

What's the best way to calculate the remaining months left on a countdown timer?

I'm using jquery to countdown to a date in the future that is over 12 months away, in fact far longer than 10 years away.

How would I show months from 0-12 based on how much time is left?
So for example the timer could show x Years and 5 Months remaining resetting to 12 once it hits 0.

I'll be replacing the "weeks" with months, but I'm not sure how to calculate it.

``````                weeks = Math.floor(left/60/60/24/7),
``````

I think this may be what you're looking for:

``````function monthDiff(d1, d2) {
var months;
months = (d2.getFullYear() - d1.getFullYear()) * 12;
months -= d1.getMonth() + 1;
months += d2.getMonth();
return months <= 0 ? 0 : months;
}
``````

That will give you the total number of months between the two dates, after which you can use the modulus operator to get the number you need: `monthDiff(yourDate1, yourDate2) % 12`

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