Vue3 函数式弹窗的实例小结

import { h, render } from "vue";
/**
 * 函数式弹窗
 * @param component 组件
 * @param options 组件参数
 * @returns
 */
function createDialog(component: any, options: any) {
  return new Promise((resolve, reject) => {
    // 创建一个div节点
    const mountNode = document.createElement("div");
    // 将div节点拼接到Dom的body节点下
    document.body.appendChild(mountNode);
    // 使用h函数创建节点
    const vNode = h(component, {
      ...options,
      // 注意: vue子组件emit回调事件名称必须以on开头
      onSubmit: data => {
        resolve(data);
        // 移除节点
        document.body.removeChild(mountNode);
      },
      onCancel: data => {
        reject(data);
        // 移除节点
        document.body.removeChild(mountNode);
      }
    });
    // 渲染Dialog
    render(vNode, mountNode);
  });
}
export default createDialog;

// 引入函数式弹窗
import Dialog from "@/plugins/dialog";
const app = createApp(App);
// 挂载到app
app.config.globalProperties.$dialog = Dialog;

<template>
  <el-dialog v-model="dialogVisible" title="测试函数式弹窗" width="50%">
    <span>{{ props.content }}</span>
    <template #footer>
      <span class="dialog-footer">
        <el-button @click="handleCancel">Cancel</el-button>
        <el-button type="primary" @click="handleSubmit"> Submit </el-button>
      </span>
    </template>
  </el-dialog>
</template>
<script lang="ts" setup>
import { reactive, toRefs } from "vue";
// 注意: 需要按需引入使用到的第三方UI组件
import { ElDialog, ElButton } from "element-plus";
const props = withDefaults(
  defineProps<{
    show?: boolean; // moadl开关
    content?: string; // 内容
  }>(),
  {}
);
const emits = defineEmits(["submit", "cancel"]);
const state = reactive({
  dialogVisible: props.show
});
const { dialogVisible } = toRefs(state);
/** submit */
const handleSubmit = () => {
  // 回调
  emits("submit", { action: "submit", msg: "submit back" });
  // 关闭弹窗
  dialogVisible.value = false;
};
/** cancel */
const handleCancel = () => {
  // 回调
  emits("cancel", { action: "cancel", msg: "cancel back" });
  // 关闭弹窗
  dialogVisible.value = false;
};
</script>

<template>
  <!-- 动态函数式弹窗 -->
  <div class="test_dialog">
    <el-button @click="openModal">调用函数式弹窗</el-button>
  </div>
</template>
<script lang="ts" setup>
import { getCurrentInstance } from "vue";
import TestDialog from "./testDialog.vue";
// 通过全局的上下文拿到 proxy 属性
const { proxy } = getCurrentInstance();
// 调用函数式弹窗
const openModal = () => {
  // 调用弹窗
  proxy
    .$dialog(TestDialog, {
      show: true,
      content: "调用弹窗成功了！"
    })
    .then(res => {
      // submit
      console.log(res);
    })
    .catch(error => {
      // cancel 回调
      console.log(error);
    });
};
</script>
<style lang="scss" scoped>
.test_dialog {
  padding: 50px;
}
</style>

// 全局申明下$dialog，可以去除调用时ts的警告
	declare module "vue" {
	  export interface ComponentCustomProperties {
	    $dialog: any;
	  }
	}