Counts down to zero, then stops.
days hours mins secsCounts down to zero, then counts up.
days hours mins secsCounts down to zero, runs a callback function, then counts up.
days hours mins secsCounts down to zero, runs a callback function, then stops. Preceding zeroes are removed.
days hours mins secsCounts down to midnight two days from today in this browser's current time zone.
days hours mins secsCounts down to midnight two days from today* in Pacific Standard Time (PST -07:00).
days hours mins secsCounts down to midnight two days from today* in Greenwich Mean Time (GMT 00:00).
days hours mins secs* Relative to browser's current date
The source code for jDoom can be found on Github.