marca de tiempo js
var timestamp = new Date().getTime();
GutoTrosla
var timestamp = new Date().getTime();var currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds
var currentTimeInMilliseconds=Date.now(); // unix timestamp in millisecondsnew Date().getTime()
new Date().valueOf()const currentTimeInMilliseconds=Date.now(); // unix timestamp in millisecondsconst currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds