element-ui的upload组件的clearFiles方法

 <template>
     <div>
         <el-button @click="clearFiles">重新上传</el-button>
         <el-upload ref="my-upload">
             <el-button type="primary">点击上传</el-button>
         </el-upload>
     </div>
 </template>

方法调用

 <script>
     export default {
         data(){
             return {
         }
     },
     methods: {
         clearFiles () {
             this.$refs['my-upload'].clearFiles();
         }
     }
 };