javascript - momentjs for checking expired timestamp - Stack Overflow

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I have a timestamp ing from a table in utc like: 2018-02-21 23:31:49.391 I'm confident it's UTC time so I make a moment out of it.

let exp = moment(2018-02-21 23:31:49.391);

That represents an expiration date/time. I'm trying to use moment to check if that timestamp is in the past pared to the current time. I think part of my issue is that perhaps moment doesn't know that's in UTC. If so, how can i specify in the constructor?

To do this parison/validation I'm creating a new moment like let now = moment().utc();

and then paring the time like

now.isAfter(exp)

However, it keeps ing back as false for me. Is not specifying the first timestamp as UTC the issue?

I have a timestamp ing from a table in utc like: 2018-02-21 23:31:49.391 I'm confident it's UTC time so I make a moment out of it.

let exp = moment(2018-02-21 23:31:49.391);

That represents an expiration date/time. I'm trying to use moment to check if that timestamp is in the past pared to the current time. I think part of my issue is that perhaps moment doesn't know that's in UTC. If so, how can i specify in the constructor?

To do this parison/validation I'm creating a new moment like let now = moment().utc();

and then paring the time like

now.isAfter(exp)

However, it keeps ing back as false for me. Is not specifying the first timestamp as UTC the issue?

• javascript
• momentjs

Share Improve this question Follow asked Feb 21, 2018 at 23:47 sb9sb9 31611 gold badge88 silver badges2222 bronze badges 1

• Please include a Minimal, Complete, and Verifiable example of your code so we can more easily understand the problem. – Herohtar Commented Feb 21, 2018 at 23:56

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2 Answers 2

Sorted by: Reset to default 4

Try it:

var a = moment('2018-02-21 23:31:49.391');
var b = moment().utc();
var d = a.diff(b,'days');
if (d > 0){
   //a is bigger than b actual moment.
} else if (d < 0){
   //a is smaller than b actual moment.
}else{
   //a =  b
}

If it's UTC time, then

let exp = moment.utc('2018-02-21 23:31:49.391');

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