JSFiddle - React, Tailwind, and code Playground
HTML
<script src="https://momentjs.com/downloads/moment.js"></script>
JavaScript
var date1 = "2011-11-20";
var date2 = "2012-10-20";
var time1 = moment(date1).format('YYYY-MM-DD');
var time2 = moment(date2).format('YYYY-MM-DD');
if(time2 > time1){
console.log('date2 is Greter than date1');
}else if(time2 > time1){
console.log('date2 is Less than date1');
}else{
console.log('Both date are same');
}