<template>
  <div id="app">
   
    <router-view />
  </div>
</template>

<script>
export default {
  name: "App",
  data() {
    return {
 
    };
  },
  methods: {
     
  },
  created () {
      var store = require('store');
  
      //在页面加载时读取sessionStorage里的状态信息
      if (sessionStorage.getItem("storedata") ) {
         this.$store.replaceState(Object.assign({}, this.$store.state,JSON.parse(sessionStorage.getItem("storedata"))))
    }     //在页面刷新时将vuex里的信息保存到sessionStorage里
     window.addEventListener("beforeunload",()=>{
         sessionStorage.setItem("storedata",JSON.stringify(this.$store.state))
     });
    // 兼容iphone手机
     window.addEventListener("pagehide",()=>{
         sessionStorage.setItem("storedata",JSON.stringify(this.$store.state))
     });
  },
};
</script>
<style>
* {
  margin: 0;
  padding: 0;
}
</style>