Date Difference

[shultz]

How can I find the difference of two dates in Javascript. and also how can I find the final date when a certain number of hours are substracted from the current time.

For example:

If I want to find the difference in days between 1st of Jan 2002 and today, how can I do it.

Another One:

If I reduce 5 hours say from 3am today, how can I find the resulting date and time.

any idea?

thanks in advance.

 

[harmmeijer]

<script>
var dteNow = new Date();
var dteJan = new Date(2002,0,1);
var diff = dteNow.getTime() - dteJan.getTime();
alert('Difference between now and 1 jan 2002 is:\n' + diff + ' milliseconds');
alert('Difference between now and 1 jan 2002 is:\n' + diff/1000 + ' seconds');
alert('Difference between now and 1 jan 2002 is:\n' + diff/6000 + ' minutes');
alert('Difference between now and 1 jan 2002 is:\n' + diff/3600000 + ' hours');
alert('Difference between now and 1 jan 2002 is:\n' + diff/86400000 + ' days');


</script>