How to save data using Vuex in Vue application

Vue is a popular JavaScript framework that provides developers with a modern way to build web applications. Vuex is a state management model of Vue that allows you to easily manage, share and synchronize state in your application. In this article, we will focus on how to save data using Vuex in a Vue application.

1. What is Vuex?

Vuex is an open source state management library that can be used with Vue.js. It allows you to share state among different components of your application and keep it synchronized throughout your application. The core idea of ​​Vuex is the "single state tree", which saves all the state of the application (such as data in components) in a "store". This makes state management more predictable and easier to maintain.

2. Installing and setting up Vuex in your Vue application

Before using Vuex, you need to install it in your Vue application. Vuex can be downloaded and installed through the NPM package manager.

In the project, you need to import Vuex before the Vue instance:

import Vue from 'vue';
import Vuex from 'vuex';
Vue.use(Vuex);

Next, you need to add a new Vuex store instance. A Vuex store instance is an object that contains all the state and logic in your application.

const store = new Vuex.Store({
  state: {
    count: 0
  },
  mutations: {
    increment (state) {
      state.count++
    }
  }
})

In this example, the store instance will have a state property named "count" and a change method named "increment". This change method will increase the value of count. We can use it in components by:

this.$store.commit('increment')

3. How to store data to Vuex

Storing data to Vuex in a Vue application is not complicated. To store data, you need to define a mutations method on the store instance. This method can be called from any component to change state.

Let’s take a look at an example. Let's say we have an array called "todos" in our application and we want to store it in a state property called "todos".

const store = new Vuex.Store({
  state: {
    todos: []
  },
  mutations: {
    addTodo (state, todo) {
      state.todos.push(todo)
    }
  }
})

In this example, we define a mutations method named addTodo. This method will be called in the component to add a new todo to the state.todos array. Components can call it in the following ways:

this.$store.commit('addTodo', todo)

Note: The "addTodo" parameter is a todo object.

4. Summary

As mentioned above, Vuex is a powerful state management library for Vue.js. By using Vuex in your application, you can better manage state and logic. To store data in Vuex, you need to define the mutations method in the store instance. In a component you can use them by calling this.$store.commit. Hope this article is helpful to you.

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