import {
 RECEIVE_PUBLICHTIT
} from './mutation-types'
 
//保证刷新页面数据不消失*
function storeLocalStore (state) {
 window.localStorage.setItem("publicTit",JSON.stringify(state));
}
 
export default {
 [RECEIVE_PUBLICHTIT] (state,{title}){
  state.publicTit = title
  storeLocalStore(state)
 }
}

created(){
     localStorage.getItem("publicTit")&&
this.$store.replaceState(JSON.parse(localStorage.getItem("publicTit")))
   },

created(){
    //在页面加载时读取localStorage状态 复制对象是解决新vuex管理的状态中新添加的字段也可以存入localStorage中
    localStorage.getItem("publicTit") && this.$store.replaceState(Object.assign(this.$store.state,JSON.parse(localStorage.getItem("publicTit"))));
 
    //在页面刷新时将vuex里的信息保存到localStorage里，避免多次调用localStorage进行存储降低性能,beforeunload是在页面刷新之前调用
    window.addEventListener("beforeunload",()=>{
     localStorage.setItem("publicTit",JSON.stringify(this.$store.state))
    })
   }