1Math.round(new Date().getTime() / 1000).toString()

1var s = new Date(1504095567183).toLocaleDateString("en-US")
2// expected output "8/30/2017"  
3console.log(s);

1Math.floor(new Date() / 1000) // in seconds

1Math.floor(new Date() / 1000)

1Math.floor(+new Date() / 1000)
2

1function getUnixTime() {
2  return (Date.now() / 1000) | 0;  
3}