Science Knowings: JavaScript Course For Social Media


What is Vuex?

Vuex is a state management pattern and library for Vue.js applications. It helps you manage the state of your application in a centralized and predictable way.

Why Use Vuex?

Vuex provides several benefits, including:

  • Centralized State Management: Keeps all application state in a single place.
  • Predictable State Mutations: Ensures that state changes are only made through explicit mutations.
  • Time-Travel Debugging: Allows you to track and debug state changes over time.
  • Testing: Facilitates testing by providing a clear separation between state and actions.

Vuex Core Concepts

Core Concepts of Vuex

  • State: The central store of data in your application.
  • Getters: Functions that allow you to access and transform state.
  • Mutations: Methods that commit changes to the state.
  • Actions: Methods that perform asynchronous tasks and commit mutations.
  • Modules: Isolated sections of state and logic that can be combined to create larger stores.


The state object is the heart of Vuex. It contains all the data that your application needs to track and manage.

To access the state in your components, you can use the $store property.


Getters are functions that allow you to access and transform state without mutating it.

This is useful for creating computed properties that depend on multiple state properties.

To define a getter, you use the getters property of the Vuex store.


Mutations are the only way to change the state of your Vuex store.

Mutations must be pure functions, meaning they should not have side effects and should only modify the state.

To commit a mutation, you use the commit method of the $store object.


Actions are methods that perform asynchronous tasks and commit mutations.

This allows you to keep your mutations pure and your code organized.

To dispatch an action, you use the dispatch method of the $store object.


Modules are isolated sections of state and logic that can be combined to create larger stores.

This is useful for organizing your store and managing complex applications.

To create a module, you use the modules property of the Vuex store.

Vuex in Practice

Here is an example of how you can use Vuex in your Vue.js components:

  <p>Count: {{ count }}</p>
  <button @click="increment">Increment</button>
import { mapState, mapActions } from 'vuex'
export default {
  computed: {
  methods: {

Using Vuex in Your Components

You can use the mapState and mapActions helpers to easily access state and actions in your components.

Vuex Best Practices

Here are some best practices for using Vuex:

  • Keep your state as small as possible.
  • Use getters to access and transform state.
  • Only commit mutations to change state.
  • Use actions to perform asynchronous tasks.
  • Organize your store using modules.

Vuex Plugins

Vuex plugins allow you to extend the functionality of Vuex.

There are many plugins available, including:

Next Topic: Vue Router

In the next session, we'll explore Vue Router, a library for managing client-side routing in Vue.js applications.

Why Learn Vue Router?

  • Allows you to create single-page applications (SPAs).
  • Provides a consistent navigation experience across your application.
  • Supports dynamic routing and nested routes.

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