vue+element-ui上傳文件進度條顯示

<el-upload
  class="upload-demo"
  ref="upload"
  action=""
  :on-preview="handlePreview"
  :on-remove="handleRemove"
  :on-progress="handleProgress"
  :file-list="fileList"
  :auto-upload="false">
</el-upload>

<el-progress type="circle" :percentage="0"></el-progress>

handleProgress(event,file,fileList){
   this.percentage = parseInt((event.loaded / event.total *100).toFixed(0))
},