如何在时刻js中将毫秒附加到给定的日期？

Question

Is there any way to format the below date which has HH:MM:SS as time format into HH:MM:SS:MMM in moment js?

2016-01-10T00:00:00+05:30

Can it be converted into the format like the below one?

2016-01-10T00:00:00.000+05:30

Simple JS Code:

 var pop = moment('2016-01-03'); var pop1 = pop.add(1,'week'); console.log(pop1.format());

 <script src="http://momentjs.com/downloads/moment.js"></script>

Answer 1

You can pass a custom string format argument to the format method in order to customize format output. In your case you can do:

pop1.format('YYYY-MM-DDTHH:mm:ss.SSSZ');

where mm means minutes (00..59), ss seconds (00..59) and SSS fractional seconds (000..999).

The docs says that if you do not pass any arguments to format :

As of version 1.5.0 , calling moment#format without a format will default to moment.defaultFormat . Out of the box, moment.defaultFormat is the ISO8601 format YYYY-MM-DDTHH:mm:ssZ .

So if you want to change the way format() (without parameters) works, you can change moment.defaultFormat , for example:

moment.defaultFormat = 'YYYY-MM-DDTHH:mm:ss.SSSZ';

Here there is a live example:

 var pop = moment('2016-01-03'); var pop1 = pop.add(1,'week'); // By default format() wil give you results in YYYY-MM-DDTHH:mm:ssZ console.log(pop1.format()); // 2016-01-10T00:00:00+05:30 // You can pass a custom format string to the format method console.log(pop1.format('YYYY-MM-DDTHH:mm:ss.SSSZ')); // 2016-01-10T00:00:00.000+05:30 // You can change defaultFormat according your needs moment.defaultFormat = 'YYYY-MM-DDTHH:mm:ss.SSSZ'; console.log(pop1.format()); // 2016-01-10T00:00:00.000+05:30

 <script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.15.1/moment.min.js"></script>

Answer 2

There is certainly a millisecond method which adds milliseconds. See the docs .

You can also see that there is a formatting shortcode for milliseconds - ms in the table here .

String formatting may be of use