<el-upload action="false"
              :disabled="uploading"
              ref="uploadRef"
              class="upload-demo" 
              :before-upload="beforeUploadVdo" 
              :limit="5" 
              :on-exceed="handleExceed5New" 
              :on-remove="handleRemove" 
              :http-request="httpRequest" 
              :file-list="fileList">
                <el-button :loading="uploading" size="small" type="primary">点击上传</el-button>
                <span class="star"></span>
              </el-upload>



//清空文件
this.$refs.uploadRef.value.clearFiles()

//删除单个文件
const { uploadFiles } = this.$refs.uploadRef
if (uploadFiles && uploadFiles.length) {
   uploadFiles.splice(uploadFiles.length - 1, 1)
}