Question

125

Moment .isAfter not returning correctly

rated 0 times [ 129] [ 4] / answers: 1 / hits: 28141 / 9 Years ago, thu, june 4, 2015, 12:00:00

I have a string that is stored in UTC time. I am trying to see if this time is after the current UTC time. I am using momentjs and the isAfter() method returns the incorrect value when there is only 1 hour difference.

The active_time variable happens at 15:00 utc. The current_time is set to 16:00 utc. So I think active_time.isAfter(current_time) should return false but it is returning true. How can I make it return false?

jsFiddle link: http://jsfiddle.net/Ln1bz1nx/

Code:

//String is already in utc time

var active_time = moment('2015-06-04T15:00Z', 'YYYY-MM-DD[T]HH:mm[Z]');



//Convert current time to moment object with utc time

var current_time = moment( moment('2015-06-04T16:00Z').utc().format('YYYY-MM-DD[T]HH:mm[Z]') ); 



console.log('active_time =',active_time);

console.log('current_time =',current_time);

console.log( active_time.isAfter(current_time) ); //Why does this return true?

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answered 9 Years ago josefinap · Accepted Answer

Even though the first date string is utc, you still need to put the moment into utc mode before you compare. Take a look at the docs here: http://momentjs.com/docs/#/parsing/utc/

//String is already in utc time, but still need to put it into utc mode

var active_time = moment.utc('2015-06-04T15:00Z', 'YYYY-MM-DD[T]HH:mm[Z]');



//Convert current time to moment object with utc time

var current_time = moment.utc('2015-06-04T16:00Z', 'YYYY-MM-DD[T]HH:mm[Z]');



console.log('active_time =',active_time.format());

console.log('current_time =',current_time.format());

console.log( active_time.isAfter(current_time) );

<script src=https://rawgit.com/moment/moment/develop/moment.js></script>