Javascript return number of days,hours,minutes,seconds between two dates

Question

Does anyone can link me to some tutorial where I can find out how to return days , hours , minutes, seconds in javascript between 2 unix datetimes?

I have:

var date_now = unixtimestamp; var date_future = unixtimestamp; 

I would like to return (live) how many days,hours,minutes,seconds left from the date_now to the date_future.

Answer 1

Just figure out the difference in seconds (don't forget JS timestamps are actually measured in milliseconds) and decompose that value:

// get total seconds between the times var delta = Math.abs(date_future - date_now) / 1000;  // calculate (and subtract) whole days var days = Math.floor(delta / 86400); delta -= days * 86400;  // calculate (and subtract) whole hours var hours = Math.floor(delta / 3600) % 24; delta -= hours * 3600;  // calculate (and subtract) whole minutes var minutes = Math.floor(delta / 60) % 60; delta -= minutes * 60;  // what's left is seconds var seconds = delta % 60;  // in theory the modulus is not required 

EDIT code adjusted because I just realised that the original code returned the total number of hours, etc, not the number of hours left after counting whole days.

Answer 2

Here's in javascript: (For example, the future date is New Year's Day)

DEMO (updates every second)

var dateFuture = new Date(new Date().getFullYear() +1, 0, 1); var dateNow = new Date();  var seconds = Math.floor((dateFuture - (dateNow))/1000); var minutes = Math.floor(seconds/60); var hours = Math.floor(minutes/60); var days = Math.floor(hours/24);  hours = hours-(days*24); minutes = minutes-(days*24*60)-(hours*60); seconds = seconds-(days*24*60*60)-(hours*60*60)-(minutes*60);