如何在 vue 中保持活动状态？

Question

页面列表中有表格、表格和分页。从detail.vue返回后，我想保持表单输入、表格数据和当前页码不变，但每次都会刷新。

我是否需要将表单数据、表格数据和页码存储在某个地方才能使其正常工作？谢谢。

路由器

{      
    path: '/list',  
    name: 'List',      
    component: resolve => require(['@/pages/list'], resolve),    
    meta: {          
        keepAlive: true 
    }    
}

App.vue

<div class="app">
    <keep-alive>
      <router-view v-if="$route.meta.keepAlive"></router-view>
    </keep-alive>
    <router-view v-if="!$route.meta.keepAlive"></router-view>
</div>

list.vue

分页在组件 ListTable 内

<template>
  <div class="app-container">
    <el-form ref="form" :model="form" label-width="100px">
      <el-form-item label="MID" prop="name">
        <el-input v-model="form.mid" />
      </el-form-item>    
      <el-form-item label="Name" prop="name">
        <el-input v-model="form.name" />
      </el-form-item>    
      <el-form-item label="Birthdate" prop="birthdate">
        <el-date-picker
          v-model="form.birthdate"
          value-format="yyyy-MM-dd"
        />
      </el-form-item>
    </el-form>
    <ListTable ref="childTable" :listdata="listData" :currpage="currPage" />
  </div>
</template>

<script>
export default {
  name: 'MemberList',
  components: {
    ListTable: () => import('@/components/Membership/ListTable')
  },
  data() {
    return {
      currPage: 1,
      listData: [],
      form: {
        mid: '',
        name: '',
        birthdate: '',
      }
    }
  },
  mounted() {
    this.fetchData()
  },
  methods: {
    fetchData() {
      // get list data
      this.listData = ***
      .....
    },
  }
</script>

Answer 1

首先，您需要将组件的键设置为keep-alive，这会在渲染的组件之间产生差异

<keep-alive>
      <router-view v-if="$route.meta.keepAlive" :key="$route.fullPath"></router-view>
</keep-alive>

其次你应该把 ListTable 放到另一个 keep-alive 告诉 vue 你也想存储渲染组件

<keep-alive>
      <ListTable ref="childTable" :listdata="listData" :currpage="currPage" :key="currPage"/>
</keep-alive>