npm install moment
html
<script src="moment/path/to/moment.js"></script>
script
var now = moment();
script
script
var now = moment();
console.log(now.format('YYYY-MM-DD')); // 2021-01-01
console.log(now.format('HH:mm:ss')); // 09:30:00
script
var date = moment('2021-01-01', 'YYYY-MM-DD');
console.log(date.isValid()); // true
script
var futureDate = moment().add(7, 'days');
console.log(futureDate.format('YYYY-MM-DD')); // 2021-01-08
var pastDate = moment().subtract(1, 'month');
console.log(pastDate.format('YYYY-MM-DD')); // 2020-12-01
script
var start = moment();
var end = moment().add(2, 'hours');
var duration = moment.duration(end.diff(start));
console.log(duration.asHours()); // 2
