Search⌘ K
AI Features
Home
Courses
The Complete Guide to Modern JavaScript

Proxies

Explore how Proxies in JavaScript ES6 enable you to define custom behavior for object operations like property lookup and assignment. Learn to simplify code by using a Proxy handler with one getter and setter, allowing validation, logging, and property control. This lesson helps you understand Proxy usage for cleaner, more flexible JavaScript objects.

We'll cover the following...

What is a Proxy? #

From MDN:

The Proxy object is used to define custom behavior for fundamental operations (e.g. property lookup, assignment, enumeration, function invocation, etc).

 

How to use a Proxy ? #

This is how we create a Proxy:

Javascript (babel-node)
var x = new Proxy(target,handler)
  • our target can be anything, from an object, to a function, to another Proxy
  • a handler is an object which will define the behavior of
...