上原码： 一、main.js原码： import Vue from ‘vue’ import store from ‘./store’ import vuex from ‘./vuex.vue’

new Vue({ el:’#app’, store, render: xx=>xx(vuex) })

二、store.js原码： import Vue from ‘vue’ import Vuex from ‘vuex’ Vue.use(Vuex)

const state ={ count : 44 } const mutations ={ jia(state){ state.count ++ }, jian(state){ state.count – } }

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

三、vuex.vue原码： <template>

</template>

<script> export default{ name:'app', data(){ return { count:0 } }, computed:{ count(){ return this.$store.state.count } } } </script>