Moment.js isBefore function not working as expected

Question

My console log is giving me an unexpected output.

var bool = (moment(\"2017-04-08 23:00:00\").isBefore(moment(\"2017-04-09 01:00:00\", \'day\')));
console.lo         


        

Answer 1

The moment(...) argument does not accept the 'day' parameter.

Instead, you should be calling isBefore(...) with the day parameter like so:

moment(...).isBefore(moment(...), 'day'));

More info can be found at the moment docs here.

Answer 2

@Oliver Charlesworth is right, moment() doesn't accept 'day' as a second argument. Have a look here and scroll down for all its valid signatures.

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With that being said, you can either convert

isBefore(moment("2017-04-09 01:00:00", 'day'));

to

isBefore(moment('2017-04-09 01:00:00'), 'day');

or to

isBefore('2017-04-09 01:00:00', 'day');

Both work.

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Here is the signature for isBefore.