[Nazir]

This function compares two dates and returns the number of years,month and days between them as an array of three numbers:

function getTimeBetween(from, until)
{
var past = from == '' ? new Date() : new Date(from);
var future = until == '' ? new Date() : new Date(until);

if(past >= future)
{
var tmp = past;
past = future;
future = tmp;
}

var between = [
future.getFullYear() - past.getFullYear(),
future.getMonth() - past.getMonth(),
future.getDate() - past.getDate()
];

if(between[2] < 0)
{
between[1]--;
var ynum = future.getFullYear();

var mlengths = [
31,
(ynum % 4 == 0 && ynum % 100 !== 0 || ynum % 400 == 0) ? 29 :28,
31, 30, 31, 30, 31, 31, 30, 31, 30, 31
];

var mnum = future.getMonth() -1;
if(mnum < 0) {mnum += 12;}

between[2] += mlengths[mnum];
}

if ( between[1] < 0)
{
between[0]--;
between[1] += 12;
}

return between;
}

To use the function, we specify a date in the past and a date in the future using a compatible format, such as "25 July, 2006", or "Mon, 25 July 2006 15:04:00 GMT+0100". The object also understands US time-zone abbreviations (such as PST), and assumes GMT if none is specified ( and midnight GMT if no time is specified).

if you specify an emty string for either argument, the current date will be used.

Here is how to use the function:

var until = getTimeBetween('25 July 2006', '10 Jun 2014');
alart(until[0]+ 'years ' + until[1] + 'months ' + until[2] + 'days ');

[ScottHughes]

Great code, you don't mind if I use that right?

Did you write it yourself?