elementui中上传文件做校验，文件上传后检验语句消失

                        <el-form-item label="附件" label-width="100px"  prop="docsNew" ref="headimgUpload">
                          <div  class="file-con">
                            <div :key="key" v-for="(i, key) in item.docsNew" class="file-detail">
                              <div style="display: flex">
                                <el-tooltip effect="dark" :content="i.docName" placement="top-start">
                                  <span class="file-name" >{{i.docName}}</span>
                                </el-tooltip>
                                <!-- <span style="padding-right: 40px">{{i.date}}</span> -->
                                <!-- 删除 -->
                                <span @click="handleRemove(item.docsNew, key)" ><i class="el-icon-delete"></i> </span>
                              </div>
                            </div>
                          </div>
                      <!-- 上传 -->
                          <div @click="getPicture(index)" style="width: 100px">
                            <upload @handleAvatarSuccess="handleAvatarSuccessDocsNew" :baseUrl="baseUrl"></upload>
                          </div>
                        </el-form-item>

　

　

handleAvatarSuccessDocsNew(fileData){
    if(fileData.code == 200){
      Message.info(fileData.message)
      let file =  this.handleFileData(fileData)
      this.form.eventParts[this.index].docsNew.push(file)
      console.log("this.$refs.headimgUpload1", this.$refs.headimgUpload)
      this.$nextTick(() => {
        this.$refs.headimgUpload[this.index].clearValidate(); // 关闭校验
      })
    }else {
      Message.info(fileData.message)
    }
  },

　　getPicture(index){

    　　　this.index = index;

 　　},