Javascript Convert Date Time string to Epoch

Question

so I give up...been trying to do this all day;

I have a string that supplies a date and time in the format dd/MM/yyyy hh:mm (04/12/2012 07:00

Answer 1

JavaScript dates are internally stored as milliseconds since epoch. You just need to convert it to a number, e.g. with the unary + operator, to get them. Or you can use the .getTime method.

The harder will be parsing your date string. You likely will use a regex to extract the values from your string and pass them into Date.UTC:

var parts = datestring.match(/(\d{2})\/(\d{2})\/(\d{4}) (\d{2}):(\d{2})/);
return Date.UTC(+parts[3], parts[2]-1, +parts[1], +parts[4], +parts[5]);

This will yield 1354604400000 ms for your example date.

Answer 2

var time = new Date().getTime() / 1000 + 900 + 330*60;

console.log("time = "+time);

getTime() will return current time with milleseconds in last 3 digit so divide it by 1000 first. Now I have added 900 means 15 min which I need from my current time(You can delete if you do not require further delay time), 330*60(5 hr 30) is required to convert GMT time to IST which is my current region time.

Use below site to test your time :-

https://www.epochconverter.com/

Hope it will help you :)

Answer 3

var someDate = new Date(dateString);
someDate = someDate.getTime();

Answer 4

Easiest way to do is -

const moment = require('moment')


 function getUnixTime () { return this.getTime() / 1000 | 0 }
let epochDateTime = getUnixTime(new Date(moment().add(365, 'days').format('YYYY- 
MM-DD hh:mm:ss')))  

Answer 5

You can use the momentjs library to do this rather easily.

var epoch = moment(str).unix();

http://momentjs.com/

Answer 6

You can use Date.parse(date).

function epoch (date) {
  return Date.parse(date)
}

const dateToday = new Date() // Mon Jun 08 2020 16:47:55 GMT+0800 (China Standard Time)
const timestamp = epoch(dateToday)

console.log(timestamp) // => 1591606075000