July 2008
Beginner
356 pages
6h 8m
English
Content preview from Object-Oriented JavaScriptBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 3. Functions
Mastering functions is an important skill when you learn any programming language and even more so when it comes to JavaScript. This is because JavaScript has many uses for functions, and much of the language's flexibility and expressiveness comes from them. Where most programming languages have a special syntax for some object-oriented features, JavaScript just uses functions. This chapter will cover:
- How to define and use a function
- Passing parameters to a function
- Pre-defined functions that are available to you "for free"
- The scope of variables in JavaScript
- The concept that functions are just data, albeit a special type of data
Understanding these topics will provide a solid base that will allow you to dive into the second ...
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