JAVASCRIPT

timestamp js

var currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds
var currentTimeInMilliseconds=Date.now(); // unix timestamp in milliseconds

time stamp to date js

let date1 = "15/03/2020";
let date2 = "15:03"

//to timestamp
var date = date1.split("/")
date= date[2] + "-" + date[1] + "-" + date[0]
date = new Date(date + "T" + date2 + ":00")
console.log(date.getTime())

//to String
date = date.toLocaleString()

console.log(date)

time stamp to date js

var myDate = new Date("Jul 21, 2013");
var date = myDate.getDate();
var month = myDate.getMonth();
var year = myDate.getFullYear();

function pad(n) {
	return n<10 ? '0'+n : n
}

var ddmmyyyy = pad(date) + "-" + pad(month + 1) + "-" + year;