August 2016
Intermediate to advanced
464 pages
13h
English
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Chapter 5. Functions for the master: closures and scopes
This chapter covers
- Using closures to simplify development
- Tracking the execution of JavaScript programs with execution contexts
- Tracking variable scopes with lexical environments
- Understanding types of variables
- Exploring how closures work
Closely tied to the functions we learned about in previous chapters, closures are a defining feature of JavaScript. Although scores of JavaScript developers can write code without understanding the benefits of closures, their use can not only help us reduce the amount and complexity of code needed to add advanced features, but also enable us to do things that otherwise wouldn’t be possible, or would be too complex to be feasible. For example, any ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.