App.js

<template>
  <div id="app">
      <router-view v-if="isRouterAlive"></router-view>
  </div>
</template>
<script>
export default {
  name: "App",
  provide() {
    return {
      reload: this.reload
    };
  },
  data() {
    return {
      isRouterAlive: true
    };
  },
  methods: {
    reload() {
      this.isRouterAlive = false;
      this.$nextTick(function() {
        this.isRouterAlive = true;
      });
    }
  }
};
</script>

subpages

inject: ["reload"],
methods: {
 handleReload() {
   this.reload();
 }
}

I don't know if this is feasible

in the lifecycle hook function of vue
can be created, or mounted