Date.prototype.setHours()
The setHours() method sets the hours for a specified date
according to local time, and returns the number of milliseconds since January 1, 1970
00:00:00 UTC until the time represented by the updated Date instance.
Syntax
setHours(hoursValue)
setHours(hoursValue, minutesValue)
setHours(hoursValue, minutesValue, secondsValue)
setHours(hoursValue, minutesValue, secondsValue, msValue)
Parameters
hoursValue- : Ideally, an integer between 0 and 23, representing the hour. If a value greater than 23 is provided, the datetime will be incremented by the extra hours.
minutesValue- : Optional. Ideally, an integer between 0 and 59, representing the minutes. If a value greater than 59 is provided, the datetime will be incremented by the extra minutes.
secondsValue- : Optional. Ideally, an integer between 0 and 59, representing the seconds. If a value
greater than 59 is provided, the datetime will be incremented by the extra seconds. If
you specify the
secondsValueparameter, you must also specify theminutesValue.
- : Optional. Ideally, an integer between 0 and 59, representing the seconds. If a value
greater than 59 is provided, the datetime will be incremented by the extra seconds. If
you specify the
msValue- : Optional. Ideally, a number between 0 and 999, representing the milliseconds. If a
value greater than 999 is provided, the datetime will be incremented by the extra
milliseconds. If you specify the
msValueparameter, you must also specify theminutesValueandsecondsValue.
- : Optional. Ideally, a number between 0 and 999, representing the milliseconds. If a
value greater than 999 is provided, the datetime will be incremented by the extra
milliseconds. If you specify the
Return value
The number of milliseconds between January 1, 1970 00:00:00 UTC and the updated date.
Description
If you do not specify the minutesValue,
secondsValue, and msValue parameters,
the values returned from the Date.prototype.getMinutes(),
Date.prototype.getSeconds(), and
Date.prototype.getMilliseconds() methods are used.
If a parameter you specify is outside of the expected range, setHours()
attempts to update the date information in the Date object accordingly.
For example, if you use 100 for secondsValue, the minutes will
be incremented by 1 (minutesValue + 1), and 40 will be used for
seconds.