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Vuex mapMutations

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VueX mapMutations: is used simply to replace this.$store.commit('abc') to   mapMutations(['abc','..']) . its functionalities are the same but mapMutations is more preferable and useful as it is able to combine different functions in mutations into one. Example: App.vue < template > < div id = "app" > < Counter /> </ div > </ template > < script > import { store , Counter } from './state/simple' export default { name: 'app' , store , components: { Counter }, data () { return { placeHolder: 'Focus on me' } }, } </ script > simple.js import Vue from 'vue' ; import Vuex , { mapGetters , mapMutations } from 'vuex' ; Vue . use ( Vuex ) const store = new Vuex . Store ({ state: { products: [ { id: 1 , name: 'pizza' , price: 10 }, ...
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VueX Actions

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VueX Actions: can be used interchangeably with mutations however, actions  be used to commit mutations asynchronously whereas mutations can only be synchronous. Vuex Actions accepts context object as argument for each handler functions and this context contains commit, state, getters, and dispatch as it store instance. In order to call handler functions inside Actions properties from vue component, we use this.$store.dispatch('deductPrice').  When it dispatches from vue component, actions handler function will call mutations handler function with payload injected. Example: simple.js import Vue from 'vue' ; import Vuex , { mapGetters , mapMutations } from 'vuex' ; Vue . use ( Vuex ) const store = new Vuex . Store ({ state: { products: [ { id: 1 , name: 'pizza' , price: 10 }, { id: 2 , name: 'fan' , price: 20 }, { id: 3 , name: 'headset' , price: 30 }, { id: 4 , name: 'phone' , price: ...
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VueX Modules

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VueX Modules: is important for large scale project as it make developer more easier to separate store state as module for example moduleOne and moduleTwo. Each module has its own state, getters, actions, mutations and namespace . However, namespace is optional. Nevertheless, it is best practice to have it to prevent some conflicts among modules state, actions, getters, mutations. Example: I have two modules with namespace inside. moduleOne const moduleOne = { namespaced: true , state: { products: [ { id: 1 , name: 'pizza' , price: 10 }, { id: 2 , name: 'fan' , price: 20 }, { id: 3 , name: 'headset' , price: 30 }, { id: 4 , name: 'phone' , price: 1004 } ] }, mutations: { deductPrice ( state ) { return state . products . map ( item => item . price -= 1 ) }, multPrice ( state , payload ) { return state . products . map ( item => i...
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