Syntax
date.setMonth(month)
The setMonth() method sets the month in the Date object to the argument month, an integer from 0 (January) to 11 (December).
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>setMonth returned "); document.write(theDate.setMonth(2)," milliseconds.") document.write("<br>Final milliseconds=",theDate.getTime()); --> </script> </html>