如何使用 Moment.js 和“fromNow”获得正确的输出？

Question

For the below program, the run date is 26/10/2017 and the variable deadline=29/10/2017 .

I am using moment.js:

 var deadline = '29/10/2017' var days = moment(deadline, "DD/MM/YYYY").fromNow(); console.log(days)

 <script src="https://momentjs.com/downloads/moment-with-locales.min.js"></script>

My output is in 2 days but actually I think the right answer is in 3 days

I think it is because fromNow is also calulating with the hours, so my question is, how can I reset this, so that I get the correct output?

Answer 1

You can use .endOf('day') on your deadline momentjs instance and you'll get 3 days.

You can also use a timestamp on top of your date such as 23:59 to get the same functionality.

 var deadline = '29/10/2017' var days = moment(deadline, "DD/MM/YYYY").endOf('day').fromNow(); // Change the time to 23:59:59 ^^^^^^^^^^^^^ console.log(days)

 <script src="https://momentjs.com/downloads/moment-with-locales.min.js"></script>

Answer 2

Rather than using fromNow you can use from . With this, you can reset today's date to midnight and compare it against that instead:

 var deadline = '29/10/2017', now = new Date().setHours(0,0,0,0), days = moment(deadline, "DD/MM/YYYY").from(now); console.log(days)

 <script src="https://momentjs.com/downloads/moment-with-locales.min.js"></script>