beforeRouteUpdate

    <ul>
      <li><router-link to="/?tab=all" exact>全部</router-link></li>
      <li><router-link to="/?tab=good" exact>精華</router-link></li>
      <li><router-link to="/?tab=share" exact>分享</router-link></li>
      <li><router-link to="/2" exact>問答</router-link></li>
      <li><router-link to="/1" exact>招聘</router-link></li>
    </ul>`

  beforeRouteUpdate (to, from, next) {
    console.log(to.path);
    console.log(to.query);
    console.log("update");
    next();
  },
  watch: {
    "$route" (to, from) {
      console.log(to.path);
      console.log(to.query);
      console.log("watch");
    }
  }

  routes: [
    {
      path: '/',
      component: topics,
      props: (route) => ({ tab: route.query.tab })
    },
    {
      path: '/:id',
      component: topics,
      props: true
    },
  ]

為什么我用watch能對(duì)路由變化作出響應(yīng)，但是beforeRouteUpdate守衛(wèi)不觸發(fā)。