vue组件拓展，或封装成函数调用思路

模版样式

首先需要创建一个基础的组件，无论是拓展还是封装都是基于一个基础的Vue组件。

1. 创建组件
   这里使用tailwind提供的组件封装一个弹窗
   index.vue

<template>
  <TransitionRoot as="template" :show="open">
    <Dialog class="relative z-10" @close="open = false">
      <TransitionChild as="template" enter="ease-out duration-300" enter-from="opacity-0" enter-to="opacity-100" leave="ease-in duration-200" leave-from="opacity-100" leave-to="opacity-0">
        <div class="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" />
      </TransitionChild>

      <div class="fixed inset-0 z-10 w-screen overflow-y-auto">
        <div class="flex min-h-full items-end justify-center p-4 text-center sm:items-center sm:p-0">
          <TransitionChild as="template" enter="ease-out duration-300" enter-from="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95" enter-to="opacity-100 translate-y-0 sm:scale-100" leave="ease-in duration-200" leave-from="opacity-100 translate-y-0 sm:scale-100" leave-to="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95">
            <DialogPanel class="relative transform overflow-hidden rounded-lg bg-white text-left shadow-xl transition-all sm:my-8 sm:w-full sm:max-w-lg">
              <div class="bg-white px-4 pb-4 pt-5 sm:p-6 sm:pb-4">
                <div class="sm:flex sm:items-start">
                  <div class="mx-auto flex h-12 w-12 flex-shrink-0 items-center justify-center rounded-full bg-red-100 sm:mx-0 sm:h-10 sm:w-10">
                    <ExclamationTriangleIcon class="h-6 w-6 text-red-600" aria-hidden="true" />
                  </div>
                  <div class="mt-3 text-center sm:ml-4 sm:mt-0 sm:text-left">
                    <DialogTitle as="h3" class="text-base font-semibold leading-6 text-gray-900">Deactivate account</DialogTitle>
                    <div class="mt-2">
                      <p class="text-sm text-gray-500">Are you sure you want to deactivate your account? All of your data will be permanently removed. This action cannot be undone.</p>
                    </div>
                  </div>
                </div>
              </div>
              <div class="bg-gray-50 px-4 py-3 sm:flex sm:flex-row-reverse sm:px-6">
                <button type="button" class="inline-flex w-full justify-center rounded-md bg-red-600 px-3 py-2 text-sm font-semibold text-white shadow-sm hover:bg-red-500 sm:ml-3 sm:w-auto" @click="open = false">Deactivate</button>
                <button type="button" class="mt-3 inline-flex w-full justify-center rounded-md bg-white px-3 py-2 text-sm font-semibold text-gray-900 shadow-sm ring-1 ring-inset ring-gray-300 hover:bg-gray-50 sm:mt-0 sm:w-auto" @click="closehandle" ref="cancelButtonRef">Cancel</button>
              </div>
            </DialogPanel>
          </TransitionChild>
        </div>
      </div>
    </Dialog>
  </TransitionRoot>
</template>

<script lang="ts" setup>
import { ref ,onMounted} from 'vue'
import { Dialog, DialogPanel, DialogTitle, TransitionChild, TransitionRoot } from '@headlessui/vue'
import { ExclamationTriangleIcon } from '@heroicons/vue/24/outline'

const open = ref(false)
interface propsT {
    text: string,
    title: string,
    close:Function
}
const props = defineProps<propsT>()

onMounted(()=>{
    if(props.show){
        open.value = props.show
    }
})
const closehandle = ()=>{
  open.value = false;
  props.close()
}
</script>

2. 函数封装

import confirm from './index.vue';
import {App, createApp} from 'vue';

class conFirm {

    static self: conFirm;

    app: App|null = null
    div?:HTMLElement 
    constructor() {
    }
    public static getInterce(){
        
        if(!this.self){
            this.self = new conFirm()
        }
        return this.self
    }
  //传入参数
    show(title:any,text:any) {
        if(!this.div) this.div = document.createElement('div');
        this.app = createApp( confirm,{
            title,
            text,
            show:true,
            close: ()=> this.closeHandle()
        })
        document.body.appendChild(this.div)
        this.app.mount(this.div)
    }

    // 卸载组件处理
    closeHandle() {
        this.app?.unmount()
        this.div?.remove()
    }
}
export default conFirm

3. 调用

conFirm.getInterce().show(
    'ttttt',
    'ccccc'
  )