参考

环境搭建

创建组件model_a，模拟要刷新的组件，每当重新加载时，都会在控制台输出提示

xml 复制代码

<script setup>
import { onMounted } from 'vue'
onMounted(()=>{
  console.log("加载组件")
})
</script>

<template>
  <div>
    this is a
  </div>
</template>

<style scoped>
</style>

每当点击按钮时，都会去刷新组件

xml 复制代码

<script setup>
import { ref,nextTick } from 'vue'
import model_a from "./model_a.vue"
</script>

<template>
  <model_a></model_a>
  <button style="border: 1px solid #ccc;" @click="refresh">
      refresh
    </button>
</template>

<style scoped>
</style>

演示

v-if

点击按钮后，flag的值会依次变为flase、true

重点是要等待dom操作结束后，再去更新flag状态由flase转化为true

多次点击后，也会对应的多次刷新组件页面

xml 复制代码

<script setup>
import { ref,nextTick } from 'vue'
import model_a from "./model_a.vue"

let flag = ref(true)
async function refresh(){
  flag.value = false
  await  nextTick()
  flag.value = true
}

</script>

<template>

  <model_a v-if="flag"></model_a>

  <button style="border: 1px solid #ccc;" @click="refresh">
      refresh
    </button>
</template>

<style scoped>
</style>

key

每次点击按钮后，对应的key会依次加1，此时组件由于Key值变化会重新加载

xml 复制代码

<script setup>
import { ref } from 'vue'
import model_a from "./model_a.vue"

const flag = ref(1)
async function refresh(){
  flag.value += 1
  console.log(flag.value)
}

</script>

<template>

  <model_a :key="flag"></model_a>

  <button style="border: 1px solid #ccc;" @click="refresh">
      refresh
    </button>
</template>

<style scoped>
</style>