vuex: Predictable state management with example

Predictable state management is a key feature of Vuex, which allows you to manage the state of your Vue.js application in a centralized and predictable way. Here’s an example of how to use Vuex for predictable state management in Vue 3:

import { createApp } from 'vue'
import { createStore } from 'vuex'

const store = createStore({
  state() {
    return {
      count: 0
    }
  },
  mutations: {
    increment(state) {
      state.count++
    },
    decrement(state) {
      state.count--
    }
  },
  actions: {
    increment(context) {
      context.commit('increment')
    },
    decrement(context) {
      context.commit('decrement')
    }
  },
  getters: {
    getCount(state) {
      return state.count
    }
  }
})
const app = createApp({
  computed: {
    count() {
      return this.$store.getters.getCount
    }
  },
  methods: {
    increment() {
      this.$store.dispatch('increment')
    },
    decrement() {
      this.$store.dispatch('decrement')
    }
  }
})
app.use(store)
app.mount('#app')

In this example, we’ve defined a Vuex store with a count state property and mutations to increment and decrement the count. We've also defined actions to call the mutations and getters to retrieve the count state property.

In our Vue.js application, we can use the store to manage the state of the count property by calling the actions and getters defined in the store. By using actions to call mutations, we ensure that all state changes are done predictably and in a controlled manner.

By using Vuex for predictable state management, we can ensure that our Vue.js application behaves consistently and in a way that is easy to understand and maintain

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