创建store改变VUEX

import Vue from "vue";

import Vuex from "vuex";

Vue.use(Vuex);

//创建一个store对象

const store=new Vuex.Store({

//用来存放数据的对象

state:{

title:"卖座电影",

username: '',

code: '',

islogin: false

},

//定义取数据

getters:{

title:function(state){

return state.title;

},

username: state => state.username,

userId: state => state.userId,

islogin: state => state.islogin

},

mutations:{

updateTitle:(state,payload)=>{

state.title=payload;

},

upUsername: (state, payload) => {

state.username = payload

},

upId: (state, payload) => {

state.userId = payload

},

upIslogin: (state, payload) => {

state.islogin = payload

},

}

});

export default store;