1var timestamp = new Date().getTime();

1var currentTimeInSeconds=Math.floor(Date.now()/1000); //unix timestamp in seconds
2var currentTimeInMilliseconds=Date.now(); // unix timestamp in milliseconds

1new Date().getTime()
2
3new Date().valueOf()

1var today = new Date().toLocaleDateString(undefined, {
2    day: '2-digit',
3    month: '2-digit',
4    year: 'numeric',
5    hour: '2-digit',
6    minute: '2-digit',
7    second: '2-digit'
8})
9

1Math.floor(Date.now() / 1000)
2

1const currentTimeInMilliseconds=Date.now(); // unix timestamp in milliseconds