setMonth Method

Sets the month value in the Date object using local time.

dateObj.setMonth(numMonth[, dateVal]) 


Required. Any Date object.
Required. A numeric value equal to the month.
Optional. A numeric value representing the date. If not supplied, the value from a call to the getDate method is used.


To set the month value using Universal Coordinated Time (UTC), use the setUTCMonth method.

If the value of numMonth is greater than 11 (January is month 0) or is a negative number, the stored year is modified accordingly. For example, if the stored date is "Jan 5, 1996" and setMonth(14) is called, the date is changed to "Mar 5, 1997."


The following example illustrates the use of the setMonth method.

function SetMonthDemo(newmonth){
   var d, s;               //Declare variables.
   d = new Date();         //Create Date object.
   d.setMonth(newmonth);   //Set month.
   s = "Current setting is ";
   s += d.toLocaleString(); 
   return(s);              //Return new setting.


Version 1

See Also

Date Object Methods | getMonth Method | getUTCMonth Method | setUTCMonth Method

Applies To: Date Object