I need to click a button to modify the key value of the component through the bound function, and I find that the key value has changed, but the component is not unloaded for re-rendering.

I checked a lot of information on the Internet, found that they are so to achieve page refresh, this problem has been troubled for a long time.

I hope there are kind people to guide me how to correctly use the key attribute to complete the page refresh.

enter image description here

<template>
  <!-- 路由组件出口 -->
  <!-- v-slot可以获取当前渲染的组件以及路由信息 -->
  <router-view v-slot="{ Component }">
    <transition name="fade">
      <!-- 渲染home一级路由的子路由 -->
      <component :is="Component" :key="refreshContent"/>
    </transition>
  </router-view>
</template>

<script setup lang="ts">
import emitter from "@/utils/emitter";
import { onUnmounted, onMounted } from "vue";


let refreshContent = 0

emitter.on('refresh_content', () => {
  refreshContent += 1
  console.log(refreshContent)
})

onMounted(() => {
  console.log('load')
})

onUnmounted(() => {
  emitter.off('refresh_content')
  console.log('unload')
})

</script>

<style scoped>
.fade-enter-from {
  opacity: 0;
  transform: scale(0)
}

.fade-enter-to {
  opacity: 1;
  transform: scale(1);
}

.fade-enter-active {
  transform: all 0.5s;
}
</style>```

I need to click a button to modify the key value of the component through the bound function, and I find that the key value has changed, but the component is not unloaded for re-rendering.

I checked a lot of information on the Internet, found that they are so to achieve page refresh, this problem has been troubled for a long time.

I hope there are kind people to guide me how to correctly use the key attribute to complete the page refresh.