Using Vuex to Manage State in a Vue.js App

Introduction to Vuex

Vuex is the official state management library for Vue.js. It allows us to manage state in a centralized store and keep our components in sync. In this tutorial, we will learn how to use Vuex to manage state in a Vue.js app.

Step 1: Installing Vuex

First, we need to install Vuex in our project. We can do this by running the following command in our terminal:

npm install vuex

Step 2: Creating the Store

Next, we need to create the store. We can do this by creating a new file called store.js and defining our state, mutations, and actions:

import Vue from 'vue'
import Vuex from 'vuex'

Vue.use(Vuex)

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

export default store

Step 3: Using the Store in Our Components

Finally, we need to use the store in our components. We can do this by using the mapState and mapActions helpers:

<template>
  <div>
    <h1>Count: {{ count }}</h1>
    <button @click="increment">Increment</button>
  </div>
</template>

<script>
import { mapState, mapActions } from 'vuex'

export default {
  computed: mapState(['count']),
  methods: mapActions(['increment'])
}
</script>