JavaScript Date API Worksheet

Questions

This reference may be helpful in understanding how you can work with Date objects.

Question 1

If you invoke the Date constructor without passing in any parameters, what date will be stored in the object that is returned?

It will store the current date based on the system's local time when the instructor was called.

Question 2

What is an 'epoch'?

The start of an event.

Question 3

What is a 'Unix timestamp' (also known as 'epoch time')?

It's January 1st 1970, where time for computers was 0.

Question 4

What is the actual date of the epoch for Unix timestamps?

January 1st, 1970.

Question 5

What does the getTime() method of a date object return (refer to the link that was mentioned above, or find another reference on the Date object in JavaScript)?

Gets the time in milliseconds since the "epoch".

Question 6

If you are working with 2 date objects, how could you use the getTime() method to determine if one date is more recent than the other?

By comparing the two values against the epoch time, all in milliseconds.