How to get current epoch timestamp in javascript

In this post, You will learn multiple ways to get the current epoch timestamp in javascript.

epoch time is Unix style in milliseconds since 01/01/1971, which means it returns a long number in milliseconds. It is epoch time or Unix timestamp

Javascript provides the Date object provides the date and time-related things.

Note: Javascript runs on client and server sides. When you are dealing with date and time-related values, You will not get correct results as these are dependent on client machines.

It is always too good to have a return the server-side timestamps only.

get time in milliseconds from Unix epoch time in javascript

First, Create an Date object in javascript returns the current date and time.

console.log(new Date())// get current date and time

getTime() method in Date object returns a long number, which is milliseconds elapsed from 1/1/1971 UTC.

console.log(new Date().getTime()) // number of milliseconds elapsed from epoc 1610334435379

get current UTC timestamp in javascript

console.log(Date.now());

date.now don’t have support in IE8 version or less, So you have to write a polyfill code to support it as per MDN

if (!Date.now) {
  Date.now = function now() {
    return new Date().getTime();
  };
}

They’re another way to get a timestamp with the valueOf method.

new Date().valueOf() 

Get timestamp in seconds

getTime() or now() returns time in milliseconds, One second is equal to 1000 milliseconds,

Use the divide operator to get the seconds.

Example:

console.log(Math.floor(new Date().getTime() / 1000));
console.log(Math.floor(Date.now() / 1000));