javascript print date&time (yyyy-mm-dd hh:mm:ss:SS)

print_datetime.js

function getNowTime() {
	var d = new Date;
	var dformat =
	[
		d.getFullYear(),
		("00" + (d.getMonth()+1)).slice(-2),
		("00" + d.getDate()).slice(-2)
	].join('-')
	+ ' '
	+ [
		("00" + d.getHours()).slice(-2),
		("00" + d.getMinutes()).slice(-2),
		("00" + d.getSeconds()).slice(-2),
		("000" + d.getMilliseconds()).slice(-3)
	].join(':');
	return dformat;
}

console.log(getNowTime());

output:
"2021-11-02 14:09:05:370"