The setHours() method of Date instances changes the hours, minutes, seconds, and/or milliseconds for this date according to local time.
Syntax
setHours(hoursValue)
setHours(hoursValue, minutesValue)
setHours(hoursValue, minutesValue, secondsValue)
setHours(hoursValue, minutesValue, secondsValue, msValue)
Parameters
hoursValue- : An integer between 0 and 23 representing the hours.
minutesValue- : An integer between 0 and 59 representing the minutes.
secondsValue- : An integer between 0 and 59 representing the seconds. If you specify
secondsValue, you must also specifyminutesValue.
- : An integer between 0 and 59 representing the seconds. If you specify
msValue- : An integer between 0 and 999 representing the milliseconds. If you specify
msValue, you must also specifyminutesValueandsecondsValue.
- : An integer between 0 and 999 representing the milliseconds. If you specify
Return value
Changes the Date object in place, and returns its new timestamp. If a parameter is NaN (or other values that get coerced to NaN, such as undefined), the date is set to Invalid Date and NaN is returned.
Description
If you do not specify the minutesValue, secondsValue, and msValue parameters, the same values as what are returned by getMinutes(), getSeconds(), and getMilliseconds() are used.
If a parameter you specify is outside of the expected range, other parameters and the date information in the Date object are updated accordingly. For example, if you specify 100 for secondsValue, the minutes are incremented by 1 (minutesValue + 1), and 40 is used for seconds.
Examples
Using setHours()
const theBigDay = new Date();
theBigDay.setHours(7);