Get colon time from a JavaScript date

JavaScript's Date objects contain a lot of information, including the time. They also include a lot of useful methods for extracting specific parts of the date and time. However, if you want to get the time part of a Date object in the format HH:MM:SS, you might need to do a bit of string manipulation.
Date.prototype.toTimeString() returns a string representation of the time part of a Date object. However, this string also includes the timezone information, which you might not need. To get only the time part in the format HH:MM:SS, you can use String.prototype.slice() to extract the first 8 characters of the string.

From 30-seconds-of-code: get-colon-time-from-date