Convert normal date to unix timestamp

You can do it using Date.parse() Method.

Date.parse($("#yourCustomDate).val())

Date.parse("03.03.2016") output-> 1456959600000

Date.parse("2015-12-12") output-> 1449878400000

var date = new Date('2012.08.10');
var unixTimeStamp = Math.floor(date.getTime() / 1000);

In this case it's important to return only a whole number (so a simple division won't do), and also to only return actually elapsed seconds (that's why this code uses Math.floor() and not Math.round()).

After comparing timestamp with the one from PHP, none of the above seems correct for my timezone. The code below gave me same result as PHP which is most important for the project I am doing.

function getTimeStamp(input) {
    var parts = input.trim().split(' ');
    var date = parts[0].split('-');
 var time = (parts[1] ? parts[1] : '00:00:00').split(':');

 // NOTE:: Month: 0 = January - 11 = December.
 var d = new Date(date[0],date[1]-1,date[2],time[0],time[1],time[2]);
 return d.getTime() / 1000;
}

// USAGE::
var start = getTimeStamp('2017-08-10');
var end = getTimeStamp('2017-08-10 23:59:59');

console.log(start + ' - ' + end);

I am using this on NodeJS, and we have timezone 'Australia/Sydney'. So, I had to add this on .env file:

TZ = 'Australia/Sydney'

Above is equivalent to:

process.env.TZ = 'Australia/Sydney'

convert timestamp to unix timestamp.

const date = 1513787412; const unixDate = new Date(date * 1000);// Dec 20 2020 (object)

to get the timeStamp after conversion const TimeStamp = new Date(date*1000).getTime(); //1513787412000

Using dayjs library:

dayjs('2019-01-25').unix() // 1548381600