Vue学习之Vuex的使用详解

import Vue from 'vue';
import Vuex from 'vuex';
 
Vue.use(Vuex);
const couterStore = new Vuex.Store(
  {
    state: {
      count1: 0,
      count2: 0,
    },
    mutations: {
      increment1(state) {
        state.count1++;
      },
      decrement1(state) {
        state.count1--;
      },
      increment2: state => state.count2++,
      decrement2: state => state.count2--,
    }
  }
);
 
export default couterStore;

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import CouterStore from './store/CounterStore'
 
Vue.config.productionTip = false
 
/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  store: CouterStore,
  components: { App },
  template: '<App/>'
})

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'
import store from './store/CounterStore'
 
Vue.config.productionTip = false
 
/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  store,
  components: { App },
  template: '<App/>'
})

<template>
  <div class="container">
    <h3>ComponentA</h3>
    <button @click="increment1">增加：第1个计数器</button>
    <button @click="decrement1">减少：第1个计数器</button><br><br>
    <button @click="increment2">增加：第2个计数器</button>
    <button @click="decrement2">减少：第2个计数器</button>
  </div>
</template>
 
<script>
export default {
  data() {
    return {
      count1: 0,
      count2: 0,
    }
  },
  methods:{
    increment1() {
      this.$store.commit('increment1')
    },
    decrement1() {
      this.$store.commit('decrement1')
    },
    increment2() {
      this.$store.commit('increment2')
    },
    decrement2() {
      this.$store.commit('decrement2')
    }
  }
}
</script>
 
<style scoped>
.container {
  margin: 20px;
  border: 2px solid blue;
  padding: 20px;
}
</style>

<template>
  <div class="container">
    <h3>ComponentB</h3>
    计数器的值：{{msg}}
    <!--也可以这么写：-->
    <!--计数器的值：{{this.$store.state.count1}}-->
  </div>
</template>
 
<script>
export default {
  computed:{
    msg() {
      return this.$store.state.count1;
    }
  }
}
</script>
 
<style scoped>
.container {
  margin: 20px;
  border: 2px solid blue;
  padding: 20px;
}
</style>

<template>
  <div class="container">
    <h3>ComponentC</h3>
    计数器的值：{{msg}}
    <!--也可以这么写：-->
    <!--计数器的值：{{this.$store.state.count2}}-->
  </div>
</template>
 
<script>
export default {
  computed:{
    msg() {
      return this.$store.state.count2;
    }
  }
}
</script>
 
<style scoped>
.container {
  margin: 20px;
  border: 2px solid blue;
  padding: 20px;
}
</style>

<template>
  <div class="outer">
    <h3>父组件</h3>
    <component-a></component-a>
    <component-b></component-b>
    <component-c></component-c>
 
  </div>
</template>
 
<script>
import ComponentA from "./ComponentA";
import ComponentB from "./ComponentB";
import ComponentC from "./ComponentC";
 
export default {
  name: 'Parent',
  components: {ComponentA, ComponentB, ComponentC},
  data() {
    return {
      name: 'Tony',
      age: 20,
      phoneNumber: '1234567890'
    }
  }
}
</script>
 
<style scoped>
.outer {
  margin: 20px;
  border: 2px solid red;
  padding: 20px;
}
</style>

import Vue from 'vue'
import Router from 'vue-router'
import Parent from "../components/Parent";
 
Vue.use(Router)
 
export default new Router({
  routes: [
    {
      path: '/parent',
      name: 'Parent',
      component: Parent,
    }
  ],
})