vuex实现简易计数器

<template>
 <div class="hello">
 <h1>Now count is {{counterValue}}</h1>
 <br>
 </div>
</template>

<script>
import { getCount } from '../vuex/getters'
export default {
 vuex: {
 getters: {
  counterValue: getCount
 }
 },
 data () {
 return {
 }
 }
}
</script>

<style scoped>
h1 {
 color: #42b983;
}
</style>

<template>
 <div>
 <button @click='increment' class="btn btn-success">click me + 3</button>
 <button @click='reduce' class="btn btn-warning">click me - 1</button>
 </div>
</template>

<script>
import { incrementCounter, reduceCounter } from '../vuex/action'
export default {
 vuex: {
 actions: {
  increment: incrementCounter,
  reduce: reduceCounter
 }
 },
 data: function () {
 return {
 }
 },
 computed: {},
 ready: function () {},
 attached: function () {},
 methods: {},
 components: {}
}
</script>

<style lang="css">
</style>

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

Vue.use(Vuex)

const state = {
 count: 0
}

const mutations = {
 INCREMENT (state, n) {
 state.count = state.count + n
 },
 REDUCE (state) {
 state.count--
 }
}

export default new Vuex.Store({
 state,
 mutations
})

export const incrementCounter = ({dispatch}) => dispatch('INCREMENT', 3)
export const reduceCounter = ({dispatch}) => dispatch('REDUCE')

export function getCount (state) {
 return state.count
}

<template>
 <div id="app">
 <img class="logo" src="/UploadFiles/2021-04-02/logo.png">

 src/main.js


// 入口文件
import Vue from 'vue'
import App from './App'
import VueRouter from 'vue-router'
import VueResource from 'vue-resource'
/* eslint-disable import VueRouter from 'vue-router'no-new */
new Vue({
 el: 'body',
 components: { App }
})

Vue.use(VueRouter)
Vue.use(VueResource)
var router = new VueRouter({
 hashbang: false, // 设置为true时，所有的路径都会被格式化为#！开头
 history: true // 默认false,利用history.pushState(), history.replaceState()来管理浏览历史记录
})

// require('./routers')(router)
router.start(App, '#app')




效果图：

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