3-2 this.$store.commit

一、组件methods方法中使用this.$store.commit

methods:{
  handleMovie(){
    this.$store.commit("changeTitle","豆瓣电影")
  }
}

二、vuex的mutations属性接收事件

import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
export default new Vuex.Store({
  state: {
      title:"首页"
  },
  mutations: {
    changeTitle(state,title){
      state.title = title
    }
  }
})