Javascript: Moment.js How to check if date is previous date

Question

I go through moment.js docs but not able to find if a date is previous date,

ex 1

var date='2018/09/28';
//now I want to compare this with today's date
var today =  moment(new Date()).format('YYYY/MM/DD');

this should return true

ex 2

var date='2018/10/02';
//now I want to compare this with today's date
var today =  moment(new Date()).format('YYYY/MM/DD');

this should return false;

I acheived this with javascript,

// I splitted days, months and year and compare with each other

but I want to know if there is something in moment to reduce my line of code?

possible duplicate https://stackoverflow.com/questions/21284312/moment-js-check-if-a-date-is-today-or-in-the-future — Sukhmeet Singh, Oct 01 '18 at 07:59
I think your answer is already present [here](https://stackoverflow.com/questions/30668373/moment-js-test-if-a-date-is-today-yesterday-within-a-week-or-two-weeks-ago) — Abdul Basit, Oct 01 '18 at 07:59
You have gone through momentjs docs but couldn't find it?? I suggest you check the docs once again plz. — Vivek Athalye, Oct 01 '18 at 07:59
@mckuok a simple google did not solved my problem thats why i asked it on stack — , Oct 01 '18 at 08:12

score 12 · Accepted Answer · answered Oct 01 '18 at 08:02

You can use isBefore to compare two dates in moment.

console.log(moment('2018/09/28', "YYYY/MM/DD").isBefore(moment()));
console.log(moment('2018/10/02', "YYYY/MM/DD").isBefore(moment()));

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

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