znacznik czasu javascript w sekundach
const ts = () => Math.floor(new Date().getTime() / 1000);
JavaScript unix timestamp from date
Math.round(new Date().getTime() / 1000).toString()
javascript get timestamp
var currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds
var currentTimeInMilliseconds=Date.now(); // unix timestamp in milliseconds
jak uzyskać znacznik czasu w javascript
const currentTimeInMilliseconds=Date.now(); // unix timestamp in milliseconds
Unix timestamp js
+ new Date()