Question

172

Momentjs and countdown timer

rated 0 times [ 175] [ 3] / answers: 1 / hits: 19315 / 12 Years ago, sat, may 5, 2012, 12:00:00

I found the Momentjs library which is pretty cool, however I don't find the documentation to be very clear on how to achieve some simple tasks.
I'm trying to build a countdown timer and I'm guessing I should use the duration object, but I don't quite understand how (maybe due to the fact that English isn't my first language). Anyways this is what I want:

var time = 7200;

var duration = moment.duration('seconds',time);



setInterval(function(){

  //show how many hours, minutes and secods are left

  $('.countdown').text(duration.format('h:mm:ss')); 

  //this doesn't work because there's no method format for the duration object.

},1000);

So everysecond it should display:

02:00:00

01:59:59

01:59:58

01:59:57

...

00:00:00

How would I achieve this result with the Momentjs library?
Thanks!

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elliem

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2 Years ago

answered 12 Years ago elishaannac · Accepted Answer

duration object represents a static period, and it does not increase/decrease with the flow of time. So if you what to decrease it you have to do it yourself, for example creating a kind of a seconds counter or recreating duration object every time. Here is the code for the second option:

var time = 7200;

var duration = moment.duration(time * 1000, 'milliseconds');

var interval = 1000;



setInterval(function(){

  duration = moment.duration(duration.asMilliseconds() - interval, 'milliseconds');

  //show how many hours, minutes and seconds are left

  $('.countdown').text(moment(duration.asMilliseconds()).format('h:mm:ss'));

}, interval);