Can you clarify the explanation of Proxy in the Vue 3 console?

Question

Can you clarify the explanation of Proxy in the Vue 3 console?

When shuffling an array, I keep encountering a strange message in the console.

Below is a snippet of my JSON file:

[
  {
    "id": 1,
    "name": "Sushi",
    "image": "https://images.pexels.com/photos/1640777/pexels-photo-1640777.jpeg?auto=compress&cs=tinysrgb&dpr=1&w=500",
    "price": 7.99,
    "restaurant": "Sushi Garden",
    "city": "Burnaby",
    "googleMap": "https://www.google.com",
    "keywords": "Lorem ipsum",
    "onlineOrders": {
      "foodly": "https://www.google.com"
      ...

In my component, I have implemented a method to shuffle the array of food objects:

import foods from "/json/foods.json";
import _ from "lodash";
...
created: function() {
    this.retrievedFoods = foods;
    this.randomizeFoodsOrder();
},
data() {
    return {
        retrievedFoods: [],
    };
},
methods: {
    randomizeFoodsOrder() {
        let temp = foods;
        console.log(temp); // Array
        this.retrievedFoods = _.shuffle(temp);
        console.log(this.retrievedFoods); // Proxy????
    },
...

After shuffling, an unexpected Proxy appears in the console log. Any insights on what might be causing this issue?

https://i.sstatic.net/k7fuJ.png

What could possibly trigger this transformation into a Proxy object?

javascript vue.js vuejs3 lodash es6-proxy

Answer 1

Answer №1

In short: Despite the presence of a Proxy label in the console, you can still view and interact with the expected values in the same manner as usual.

A proxy represents a powerful feature in JavaScript ES6 that enables you to intercept interactions with a target object and implement customized behavior. Think of it as akin to an event listener for object interactions if you're familiar with such concepts.

The concept of proxies is explained in the Vue 3 reactivity guide as follows:

A Proxy serves as an encapsulating entity around another object or function, allowing interception of its operations.

Proxies act as subtle "wrapper" entities capable of capturing not only write events (such as object mutations) but also read events (like property value access). This aspect facilitates Vue 3's reactivity mechanism on reactive variables by employing proxies to monitor data alterations and trigger updates. (In Vue 2, this process relied on getters and setters.)

Every proxy appears in the console bearing the Proxy descriptor, indicating the presence of a proxy interception. You can expand the proxy in the console to inspect its actions, with the original object accessible through the proxy's [[Target]] attribute.

In essence, how does this impact your interaction with reactive objects in Vue 3? Not significantly. Your engagement remains consistent with that of the underlying target object, devoid of any special syntax adjustments.

Answer 2

In short: Despite the presence of a Proxy label in the console, you can still view and interact with the expected values in the same manner as usual.

A proxy represents a powerful feature in JavaScript ES6 that enables you to intercept interactions with a target object and implement customized behavior. Think of it as akin to an event listener for object interactions if you're familiar with such concepts.

The concept of proxies is explained in the Vue 3 reactivity guide as follows:

A Proxy serves as an encapsulating entity around another object or function, allowing interception of its operations.

Proxies act as subtle "wrapper" entities capable of capturing not only write events (such as object mutations) but also read events (like property value access). This aspect facilitates Vue 3's reactivity mechanism on reactive variables by employing proxies to monitor data alterations and trigger updates. (In Vue 2, this process relied on getters and setters.)

Every proxy appears in the console bearing the Proxy descriptor, indicating the presence of a proxy interception. You can expand the proxy in the console to inspect its actions, with the original object accessible through the proxy's [[Target]] attribute.

In essence, how does this impact your interaction with reactive objects in Vue 3? Not significantly. Your engagement remains consistent with that of the underlying target object, devoid of any special syntax adjustments.

Answer 3

Answer №2

Have you heard about the new feature in Vue3 called toRaw? It allows you to deconstruct the proxy and access the functions within an object in your pinia store that may not be working properly through the proxy auto-wraps.

import { isProxy, toRaw } from 'vue';

const editor = toRaw(myStore.editor)

I stumbled upon this helpful tip on this website

Answer 4

Have you heard about the new feature in Vue3 called toRaw? It allows you to deconstruct the proxy and access the functions within an object in your pinia store that may not be working properly through the proxy auto-wraps.

import { isProxy, toRaw } from 'vue';

const editor = toRaw(myStore.editor)

I stumbled upon this helpful tip on this website

Answer 5

Answer №3

One way to break down the proxy is by utilizing the ES6 syntax showcased below or by making use of Vue's toRaw function.

import { reactive, toRaw } from 'vue'
const data = reactive({message:'greetings earthlings'});

console.log({...data});  
console.log(toRaw(data));

Answer 6

One way to break down the proxy is by utilizing the ES6 syntax showcased below or by making use of Vue's toRaw function.

import { reactive, toRaw } from 'vue'
const data = reactive({message:'greetings earthlings'});

console.log({...data});  
console.log(toRaw(data));

Can you clarify the explanation of Proxy in the Vue 3 console?

Answer №1

Answer №2

Answer №3

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