September 2017
Beginner
666 pages
11h 35m
English
Content preview from JavaScript: Novice to Ninja, 2nd Edition
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Chapter 5: Objects
Everything in JavaScript is either one of the six primitive data types we met in Chapter 2 (strings, numbers, booleans, symbols, 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 of the other built-in objects.
In this chapter, we’ll cover the following topics:
Object literals
Adding properties to objects
Object methods
JSON
The
MathobjectThe
DateobjectThe
RegExpobjectProject ― we'll create quiz and question objects and ask random questions
Object Literals
An object in JavaScript ...
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