1、首先需要装vuex
npm install vuex -d
2、新建store文件夹，新建index.js， 并引入vue、vuex,代码如下：
import Vue from 'vue'
import Vuex from 'vuex'
Vue.use(Vuex)
const key = 'user'
const store = new Vuex.Store({
state () {
return {
user: null
}
},
getters: {
getStorage: function (state) {
if (!state.user) {
state.user = JSON.parse(localStorage.getItem(key))
}
return state.user
}
},
mutations: {
$_setStorage (state, value) {
state.user = value
localStorage.setItem(key, JSON.stringify(value))
},
$_removeStorage (state) {
state.user = null
localStorage.removeItem(key)
}
}
})
export default store
3、在main.js中引入store,
import store from './store/index'
new Vue({
el: '#app',
router,
store, // 引入store
components: { App },
template: '<App/>'
})
4、在登录组件中，如代码所示：
this.$message({
message: '登录成功',
type: 'success'
})
this.$store.commit('$_setStorage', {user: this.loginForm.username})
this.$router.push({name: 'Home'})
5、储存其他状态类信息，方式相同。