Microsoft® JScript™
setHours Method
 Language Reference 
Version 1 

See Also                  Applies To


Description
Modifies the hours stored in the Date object according to local time.
Syntax
objDate.setHours(numHours[, numMin[, numSec[, numMilli]]])

The setHours method syntax has these parts:

Part Description
numHours Required. A numeric value equal to the hours value.
numMin Optional. A numeric value equal to the minutes value. Must be supplied if either of the following arguments are used.
numSec Optional. A numeric value equal to the seconds value. Must be supplied if the following argument is used.
numMilli Optional. A numeric value equal to the milliseconds value.

Remarks
All set methods taking optional arguments use the value returned from corresponding get methods, if you do not specify an optional argument. For example, if the numMonth argument is optional, but not specified, JScript uses the value returned from the getMonth method.

To set the hours value according to Universal Coordinated Time (UTC), use the setUTCHours method.

If the value of an argument is greater than its range or is a negative number, other stored values are modified accordingly. For example, if the stored date is "Jan 5, 1996 00:00:00", and setHours(30) is called, the date is changed to "Jan 6, 1996 06:00:00." Negative numbers have a similar behavior.

The following example illustrates the use of the setHours method:

function SetHoursDemo(nhr, nmin, nsec)
{  
  var d, s;
  var sep = ":";
  d = new Date();
  d.setHours(nhr, nmin, nsec);
  s = "Current setting is " + d.toLocaleString() 
  return(s);
}