解决vue-router 切换tab标签关闭时缓存问题

 {
  path: 'fundProListG',
  component: resolve => require(['@/pages/product/fundPros/fundTab/fundTab.vue'], resolve),
  title: '基金首页',
  redirect: 'fundProListG/fundProListG',
  meta: {
  keepAlive: false // 不需要被缓存
  },
  children: [{
  path: 'fundProListG',
  component: resolve => require(['@/pages/product/fundPros/fundProListG.vue'], resolve),
  meta: {
  keepAlive: true // 需要被缓存
  }
  },{
  path: 'fungAdm',
  component: resolve => require(['@/pages/product/fundPros/fungAdm.vue'], resolve),
  meta: {
  keepAlive: true // 需要被缓存
  }
  }]
 },

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

{
 path: 'demo/pageB',
 name: 'pageB',
 component: _import('demo/pageB'),
 meta: {
  requiresAuth: true,
  keepAlive: false, // 不需要被缓存
  title: '界面B'
 }
}
 

// 导航离开该组件的对应路由时调用[可以访问组件实例 `this`]
beforeRouteLeave (to, from, next) {
 // 销毁组件，避免通过vue-router再次进入时，仍是上次的history缓存的状态
 this.$destroy(true)
 next()
}