Syntax
date.setSeconds(seconds)
The setSeconds() method sets the seconds in the Date object to the argument seconds, an integer from 0 to 59.
The method returns an integer representing the number of milliseconds between midnight January 1, 1970 (GMT) to the new date.
<html> <script language="JavaScript"> <!-- theDate = new Date(); document.write("Initial milliseconds=",theDate.getTime()); document.write("<br>setSeconds returned "); document.write(theDate.setSeconds(16)," milliseconds.") document.write("<br>Final milliseconds=",theDate.getTime()); --> </script> </html>