vuex如何实现简易计数器

本文实例为大家分享了vue.js计数器的制作方法，供大家参考，具体内容如下

src/components

Hello.vue

<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>

Increate.vue

<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>

src/vuex

store.js

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
})

action.js

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

getters.js

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

src/App.vue

<template>
 <div id="app">
 <img class="logo" src="./assets/logo.png">
 <hello></hello>
 <increate></increate>
 </div>
</template>

<script>
import Hello from './components/Hello'
import Increate from './components/Increate'
import store from './vuex/store'
export default {
 store,
 components: {
 Hello, Increate
 }
}
</script>

<style>
html {
 height: 100%;
}

body {
 display: flex;
 align-items: center;
 justify-content: center;
 height: 100%;
}

#app {
 color: #2c3e50;
 margin-top: -100px;
 max-width: 600px;
 font-family: Source Sans Pro, Helvetica, sans-serif;
 text-align: center;
}

#app a {
 color: #42b983;
 text-decoration: none;
}

.logo {
 width: 100px;
 height: 100px
}
</style>

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：

本文已被整理到了《Vue.js前端组件学习好代码教程》，欢迎大家学习阅读。

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