Moment.js如何使用fromNow（）在几小时内返回所有内容？

Question

I've searching the moment.js docs and stackoverflow for a way to use the fromNow() function but returning everything in hours.

What I mean is:

moment([2017, 01, 05]).fromNow();     // a day ago

should be

moment([2017, 01, 05]).fromNow();     // 24 hours ago

I know it's possible to do this using .diff and probably other similar functions and then adding the text, but is it possible to use .fromNow() to do this?

Answer 1

You can use relativeTimeThreshold to customize thresholds for moment relative time.

As the docs says:

duration.humanize has thresholds which define when a unit is considered a minute, an hour and so on. For example, by default more than 45 seconds is considered a minute, more than 22 hours is considered a day and so on. To change those cutoffs use moment.relativeTimeThreshold(unit, limit) where unit is one of s , m , h , d , M .

In your case, you can increase hour thresholds to get relative days as hours. Here a working example showing time as hours from 1 hour to 26 days:

 var m1 = moment().subtract(5, 'h'); var m2 = moment().subtract(55, 'h'); var m3 = moment().subtract(1, 'd'); // Default results console.log(m1.fromNow()); console.log(m2.fromNow()); console.log(m3.fromNow()); // Change relativeTimeThreshold moment.relativeTimeThreshold('m', 60); moment.relativeTimeThreshold('h', 24*26); // Results in hours console.log(m1.fromNow()); console.log(m2.fromNow()); console.log(m3.fromNow()); 

 <script src="//cdnjs.cloudflare.com/ajax/libs/moment.js/2.17.1/moment.min.js"></script> 

Note that, if you need, moment lets you customize relative time further with relativeTime ( here one of my examples) and relativeTimeRounding method.

Answer 2

If you definitely want to use fromNow() , I don't see any way other than overriding moment's built-in function. For example, you can override it to return the difference in hours as follows:

moment.fn.fromNow = function (a) {
    var duration = moment().diff(this, 'hours');
    return duration;
}

Then you can check that fromNow() returns the value in hours:

console.log(moment([2017,0,6]).fromNow());  

which returns:

19

Note: Tried at 19:00 :)