June 2018
Beginner
288 pages
6h 31m
English
Content preview from Rediscovering 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 12Deep Dive into Metaprogramming
Method synthesis is the most powerful form of metaprogramming. You can alter the API and the behavior of objects based on the runtime context and state of the objects. You can take existing classes and twist and turn them, the way it make sense to meet your needs, far beyond what was intended by the author of a class.
Method synthesis was not possible until very recently in JavaScript. All you could do in the past was method injection, which you saw in the previous chapter. With the introduction of method synthesis and two new classes—Reflect and Proxy—you can intercept method invocations right in the middle of their execution and change the fate of the calls, the way you like.
With the ability to synthesize ...
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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.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
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.