JavaScript Date Object also provides the functions to get the parts of current time. To get the Time parts such as hours, minutes, seconds and milliseconds you can define a variable for Date Object using new keyword. This will provide all the methods for retrieving the parts of the Time as well as Date, from which you can use Time related functions to work upon.

JavaScript Date Object Methods to retrieve the Time Parts:

getHours()
getHours function returns the current Hour of Time retrieved using Date Object range from 0 to 23.

getMinutes()
getMinutes function returns the current minute of Time retrieved using Date Object range from 0 to 59.

getSeconds()
getSeconds function returns the current second of Time retrieved using Date Object range from 0 to 59.

getMilliseconds()
getMilliseconds function returns the milli seconds of Time retrieved using Date Object range from 0-999.

getTimezoneOffset()
getTimezoneOffset returns the difference between current local time and Greenwich Mean Time in minutes.

JavaScript code Example to retrieve Time Parts using Date Object:

// Date object defined with new keyword.
var myDate = new Date();

// JavaScript getHours Function
document.write(myDate.getHours());

// JavaScript getMinutes Function
document.write(myDate.getMinutes());

// JavaScript getSeconds Function
document.write(myDate.getSeconds());

// JavaScript getMilliseconds Function
document.write(myDate.getMilliseconds());

// JavaScript getTimezoneOffset Function
document.write(myDate.getTimezoneOffset());

You can divide the getTimezoneOffset with 60 to get the GMT difference in hours. It will return the hours in +/- according to your country.