In reality, it’s not so hard to understand the basics of it. Once you get it, you’ll have a new powerful weapon in your arsenal. You can use it for data validation, operator overloading, auto-fixing inputs, logging, and a lot more. Popular libraries like Vue.js and MobX take advantage of Proxy API to create reactive objects.
In this article, I want to use a simple and fun example to introduce you to Proxies and their basic mechanism.
Proxy APIs were introduced in 2015 with ES6. A
Proxy enables you to create a wrapper for another object, which can intercept and redefine fundamental operations for that object.
The 3 key terms to understand are:
Proxy object constructor takes two arguments: the target and the handler.
If you’re not familiar with Python, in the following section I’ll give you a quick refresh on these two features.
BEWARE: You’re going to see a few lines of Python. Don’t panic ;)
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