system now in javascript in timestamp code example

Example 1: javascript timestamp in seconds

const ts = () => Math.floor(new Date().getTime() / 1000);

Example 2: how to get timestamp in javascript of a date object

new Date().getTime()

new Date().valueOf()

Example 3: javascript get timestamp

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