function generateDeferredPromise() {
return (() => {
  let resolve;
  let reject;
  let p = new Promise((res, rej) => {
    resolve = res;
    reject = rej;
  });

  return {
    promise: p,
    reject,
    resolve
  };
})();
}

<template>
 <el-dialog 
 :title="title" 
 :visible.sync="drawer">
       <slot />
<div slot="footer" class="dialog-footer">
   <el-button @click="drawer = false">取 消</el-button>
   <el-button type="primary" @click="saveData">確 定</el-button>
</div>
</el-dialog>
</template>

<script>

function generateDeferredPromise() {
 return (() => {
   let resolve;
   let reject;
   let p = new Promise((res, rej) => {
     resolve = res;
     reject = rej;
   });

   return {
     promise: p,
     reject,
     resolve
   };
 })();
}
export default {
 name:'modal',
 props: {
   title: {
     type: String,
     default: undefined,
   },
   handle:{
       type:Function,
       default:(res)=>{},
   }
 },
   data() {
     return {
       drawer: false,
       promise:null,
     }
   },
   mounted() {
       if(this.handle){
           this.handle(this);
       }
   },
   methods: {
     show() {
       this.drawer = true
       this.promise=new generateDeferredPromise();
       return this.promise.promise;
     },
     saveData(){
       this.promise.resolve();
       this.promise.promise.then(()=>{
         this.drawer=false;
       })
     
     }
   }
}
</script>

<style>

</style>

   <modal title="審批/反饋" ref="modal">
    <el-descriptions :model="audit"  class="margin-top"  :column="1"  border>
      <el-descriptions-item label="意見(jiàn)">
         <el-radio-group v-model="audit.state">
     <el-radio  :label="true">通過(guò)</el-radio>
     <el-radio  :label="false">不通過(guò)</el-radio>
   </el-radio-group>
      </el-descriptions-item>
      <el-descriptions-item label="內(nèi)容">
         <el-input type="textarea" v-model="audit.comment"></el-input>
      </el-descriptions-item>
    </el-descriptions>
</modal>
async handleAudit(row) {
     const { show } = this.$refs["modal"] || {};
     show().then(async () => {
      //保存邏輯處理
     });
   },