Java Reference
In-Depth Information
Everything in JavaScript is either one of the five primitive values we met in Chapter 2
(strings, numbers, Booleans, undefined, and null) or an object . We've actually met some
objects already; arrays in Chapter 3 and functions in Chapter 4 are both objects, although
these are built-in objects that are part of the language. In this chapter we're going to look at
user-defined objects as well as some other built-in objects.
In this chapter, we'll be covering the following topics:
• object literals
• adding properties to objects
• object methods
• the Math object
• the Date object
• the RegExp object
• our project―create quiz and question objects and ask random questions
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