vue3+ts+elementui-plus二次封装弹框实战教程

<template>
      <div class='main'>
            <el-dialog v-model="visible" :title="title" :width="dialogWidth" :before-close="handleClose">
                  <!-- 内容插槽 -->
                  <slot></slot>
                  <template #footer>
                        <span class="dialog-footer">
                              <el-button v-if="showCancelButton" @click="handleClose">取消</el-button>
                              <el-button v-if="showConfirmButton" type="primary" @click="handleConfirm">
                                    确认
                              </el-button>
                        </span>
                  </template>
            </el-dialog>
      </div>
</template>
<script lang='ts' setup>
import { ElMessageBox } from 'element-plus'
import { ref, reactive, getCurrentInstance, onMounted, defineExpose, defineEmits } from 'vue'
/**
 * 传入的props变量
*/
const props = defineProps({
      title: {
            type: String,
            default: '提示',
      },
      dialogWidth: {
            type: String,
            default: '40%',
      },
      showCancelButton: {
            type: Boolean,
            default: true,
      },
      showConfirmButton: {
            type: Boolean,
            default: true,
      },
})
/**
 * 发射给父组件的方法 
 * 用于子组件给父组件传值或调用父组件方法
*/
const emits = defineEmits(['submit', 'close'])
const visible = ref(false)
// 关闭弹框
const handleClose = () => {
      emits('close')
}
// 打开弹框
const handleOpen = () => {
      visible.value = true
}
// 确认事件
const handleConfirm = () => {
      emits('submit')
}
/**
 * 暴露给父组件的方法
 * 用于父组件调用子组件方法或获取子组件属性值
*/
defineExpose({ handleOpen, handleClose, visible })
onMounted(() => {
})
</script>
<style scoped lang='scss'>
</style>

<el-button @click="showDialog">点击出现弹框</el-button>
		<BaseDialog ref="baseDialog" @submit="handleSubmit" @close="handleClose">
			<div>
				<el-input placeholder="Please input" />
			</div>
		</BaseDialog>

<script lang='ts' setup>
import BaseDialog from '@/components/BaseDialog/index.vue'
import { ref, reactive, getCurrentInstance, onMounted } from 'vue'
onMounted(() => {
})
// 获取子组件的ref
let baseDialog = ref()
// 点击出现弹框
const showDialog = () => {
	// 调用子组件方法，打开弹框
	baseDialog.value.handleOpen()
}
// 弹框确认事件
const handleSubmit = () => {
	console.log('我是父组件中的确认事件')
}
// 弹框取消事件 
const handleClose = () => {
	baseDialog.value.visible = false
}
</script>

npm init vue@latest

npm install

npm install element-plus --save

import ElementPlus from 'element-plus'
import 'element-plus/dist/index.css'
app.use(ElementPlus)

npm install element-plus --save

npm install -D unplugin-vue-components unplugin-auto-import

import { fileURLToPath, URL } from 'node:url'
import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
//按需引入element
import AutoImport from 'unplugin-auto-import/vite'
import Components from 'unplugin-vue-components/vite'
import { ElementPlusResolver } from 'unplugin-vue-components/resolvers'
// https://vitejs.dev/config/
export default defineConfig({
    plugins: [
        AutoImport({//按需引入element
            resolvers: [ElementPlusResolver()],
        }),
        Components({//按需引入element
            resolvers: [ElementPlusResolver()],
        }),
        vue(),
    ],
    resolve: {
        alias: {
            '@': fileURLToPath(new URL('./src', import.meta.url))
        }
    }
})