In Javascript , setFullYear ( ) method set the full year for a for a given date based on local time . It return a new timestamp .
Syntax ->

setFullYear( yearValue , monthValue , dayValue ) <br>

Parameter -> yearValue -> It specify the numeric value of the year , like 2014 .
monthValue -> It return integer between 0 and 11 (i.e january through december ) .It is optional .
dayValue -> It return integer between 1 and 31 ( i.e day of the month ) . It is also optional .
Note -> If you write the value of dayValue then you must also specify the monthValue .(Both are optional )
Return value -> It return the new timestamp value for the current object .
If you do not specify the monthValue and dayValue parameter , then their values returned from the getMonth() and getDate() methods .
Example ->

var date = new Date ();<br>
date.setFullYear( 2000);<br>

Another Example ->

date = new Date ("september 17 ,1992 5.30 ") ;
document.write ("Before using setfullyear method :" "+ date + "); // September 12 1992 5.30
newdate = date.date.setFullYear(2014);
document.write ("After using setfullyear method :" "+ date + "); // september 17 2014 5.30