onElementRemoval

当元素或任何包含它的元素被删除时触发。

¥Fires when the element or any element containing it is removed.

示例

源代码演练场

demo1: recreate new element

removed times: 0

---

demo2: reuse same element

target element

removed times: 0

用法

¥Usage

<script setup lang="ts">
import { onElementRemoval } from '@vueuse/core'
import { shallowRef, useTemplateRef } from 'vue'

const btnRef = useTemplateRef<HTMLElement>('btn')
const btnState = shallowRef(true)
const removedCount = shallowRef(0)

function btnOnClick() {
  btnState.value = !btnState.value
}

onElementRemoval(btnRef, () => ++removedCount.value)
</script>

<template>
  <button
    v-if="btnState"
    @click="btnOnClick"
  >
    recreate me
  </button>
  <button
    v-else
    ref="btnRef"
    @click="btnOnClick"
  >
    remove me
  </button>
  <b>removed times: {{ removedCount }}</b>
</template>