Vue 3 State Management

Let’s take a quick look at the state management in Vuejs 3.

Vue 3 provides several options for state management, depending on the complexity of your application and your specific requirements. The most common state management techniques in Vue 3 include:

• Vuex: Vuex is the official state management library for Vue.js.
• Composition API: Vue 3 introduces the Composition API, which allows you to create reactive state and logic within components.
• Provide/Inject: Vue’s Provide/Inject feature allows you to provide data at the top level of your component tree.
• Pinia: Pinia is an alternative to Vuex for state management in Vue 3.

1. Vuex

It provides a centralized store for state management of the application. Vuex allows us to define and access the application state via mutations, actions, and getters.

In order to use Vuex in Vue 3, you need to install it and set up a store, take a look at the following command and Cuex implementation example.

npm install vuex

Now let’s create a store instance. Once the store is configured, you can use it in Vue components.

import { createStore } from 'vuex';

const store = createStore({
  state: {
    // Your application's state goes here
  },
  mutations: {
    // Mutations for updating the state
  },
  actions: {
    // Actions for asynchronous operations
  },
  getters: {
    // Getters for computed properties based on state
  },
});

export default store;

2. Composition API

Vue 3 introduces the Composition API, which allows you to create reactive state and logic within components. You can manage state using the ref and reactive functions. Take a look at the following example of Composition API

import { ref } from 'vue';

const myState = ref(initialValue);

// To update the state
myState.value = newValue;

3. Provide/Inject

Vue’s Provide/Inject feature allows you to provide data at the top level of your component tree and inject it into child components. This can be used for simple state sharing between components, but it’s not as robust as Vuex for managing complex state. Read more about Provide / Inject here.

4. Pinia

Pinia is an alternative to Vuex for state management in Vue 3. It provides a similar Vuex-like API but uses the Composition API under the hood.

To use Pinia, you need to install it and create a store:

npm install pinia

import { createPinia } from 'pinia';

export const store = createPinia();

store.state({ myState: initialValue });

export default store;

You can then use the store in your Vue components in a manner similar to Vuex.

Choose the state management approach that suits your use case the best. When developing smaller projects, the Composition API or Provide/Inject might suffice, & on the other hand, larger and more complex applications may benefit from Vuex or Pinia for centralized state management.

I hope you got some overview of state management in Vuejs3.

See you in the next post, keep sharing it with others.