最简单的store

修改src/store/index.js文件

import Vue from "vue";
import Vuex from "vuex";

Vue.use(Vuex);

export default new Vuex.Store({
  state: {
    count: 0
  },
  // 改变state的唯一途径就是显式地提交 (commit) mutation
  mutations: {
    increment: state => state.count++,
    decrement: state => state.count--
  },
  actions: {},
  modules: {}
});

修改src/views/Home.vue文件

<template>
  <!-- view -->
  <div id="home">
    <p>{{ count }}</p>
    <p>
      <butt...