Unlocking the Power of mapState in JavaScript Files

Question

Unlocking the Power of mapState in JavaScript Files

How can I access my states from a `.js` file using `mapState` in Vue.js?

I attempted to do so with the following code:

import { mapState } from 'vuex';

const foo = {
  ...mapState(['axios']),
};

foo.axios.get('...');

Unfortunately, this approach did not work and resulted in the error:

TypeError: foo.axios.get is not a function

What steps should I take to successfully achieve this task?

I have looked into other solutions where they access state using `store.state. ...` instead of utilizing `mapState`, which is what I am aiming for.

javascript vue.js vuejs2 vuex

Answer 1

Answer №1

Utilizing mapState may not be the ideal approach, as it is primarily designed to create computed properties within a component.

Nevertheless, you can make it work in the following manner:

const example = {
  $store: store,
  ...mapState(['axios'])
};

example.axios().get('...');

You can find the implementation of mapState here:

https://github.com/vuejs/vuex/blob/dev/src/helpers.js#L7

Keep in mind that it requires this.$store to access the store reference. In a component, this is automatically injected, but for an object like this, it must be added manually.

Another point to consider is the need to call axios() as a method. Computed properties on components are defined as functions but accessed as properties due to Vue's internal mechanisms. However, in a regular JavaScript object such as this one, we must simply call the function as a function. This means that some advantages of computed properties, like caching, will not be retained.

Answer 2

Utilizing mapState may not be the ideal approach, as it is primarily designed to create computed properties within a component.

Nevertheless, you can make it work in the following manner:

const example = {
  $store: store,
  ...mapState(['axios'])
};

example.axios().get('...');

You can find the implementation of mapState here:

https://github.com/vuejs/vuex/blob/dev/src/helpers.js#L7

Keep in mind that it requires this.$store to access the store reference. In a component, this is automatically injected, but for an object like this, it must be added manually.

Another point to consider is the need to call axios() as a method. Computed properties on components are defined as functions but accessed as properties due to Vue's internal mechanisms. However, in a regular JavaScript object such as this one, we must simply call the function as a function. This means that some advantages of computed properties, like caching, will not be retained.

Unlocking the Power of mapState in JavaScript Files

Answer №1

Similar questions

Interactive input field designed for modifying, adding, and removing data in MySQL

Exploring the world of Ajax with jQuery

Tips for notifying the user about incorrect login credentials in Ionic 3

Vue.js is having trouble locating images

What are some ways I can optimize my Bootstrap CSS code to enhance responsiveness across different page widths?

Leveraging jQuery for handling button functionality and making asynchronous requests

Leveraging the power of moment to properly display time in relation to the present

Encountering difficulties in applying a dynamic aria-label to the md-datepicker component

The touch events are not detected on Pixi.js when buttons are placed on a stage that has been both scaled and

Attempting to modify Namecheap's custom DNS field through Python Selenium

What is the best way to make AngularJS acknowledge invalid input that has already been identified by the browser?

Identifying the initial object with a duplicate property within an array of objects using JavaScript

"Is there a way to ensure that jPlayer plays the same song even after a page refresh

Using Browserify to fetch external JSON data

Transforming a base64 encoded string into a byte array

How to resolve preventDefault issue on else condition during form submission in CoffeeScript on Rails 4

Collapsible tree visualization in D3 experiences erratic behavior while zooming

What is the best way to eliminate the [lang tag] from a URL in Next.js?

After refreshing the page, vuex is encountering null values when using firebase.auth().onAuthStateChanged

The issue with jquery slideToggle is that it mistakenly opens all divs instead of just the specific div that should