javascript timestamp in seconds

const ts = () => Math.floor(new Date().getTime() / 1000);var currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds
var currentTimeInMilliseconds=Date.now(); // unix timestamp in millisecondsnew Date().getTime()

new Date().valueOf()Math.floor(new Date() / 1000) // in secondsvar seconds = new Date().getTime() / 1000;