June 2012
Intermediate to advanced
386 pages
10h 7m
English
Content preview from Web Technology: Theory and PracticeBecome 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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4.11 CLOSURE SCENARIOS
4.11.1 Simplify Scope
Other common Object-Oriented languages like C# have a concept of block scope. JavaScript does not. The scopes it can handle are either global or local within a function. This perceived simplicity on the other hand makes it clumsy to handle since variables are littered all over the place. Closures act as a means to simplify.
4.11.2 Return Methods from Functions
The idea is to encapsulate private logic and expose only certain, “public” methods. Take a variation of the above methods to implement a counter but with a difference—to reuse the same counter for both the increments. Also implement it by making a property of the returned function (in this case it is incrFuncs).
Take care to click on Initialize ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.