vue+element获取el-table某行的下标,根据下标操作数组对象方式

<div class="importBox">
   <el-button type="primary" icon="el-icon-upload2" class="box_btn" @click="onImport">导入</el-button>
   <ImportExcel ref="importFile" class="box_upload"@getImportFile='getImportFile'/>
</div>

<template>
 <el-upload
  class="upload-demo"
  ref="fileRefs"
  :action="action"
  :show-file-list="false"
  :accept="acctype"
  :limit="limit"
  :http-request="uploadFileRes"
  :before-upload="beforeAvatarUpload"
  >
  <el-button :loading="uploadLoading" type="primary" >导入</el-button>
 </el-upload>
</template>

// 按钮-导入
  onImport() {
   // 可以先进行适合自己需求的操作，完成后再执行
　　　　this.$refs['importFile'].$refs['fileRefs'].$refs['upload-inner'].handleClick()触发选择文件
   this.$refs.searchForm.validate((valid) => {
    if (valid) {
     this.$refs['importFile'].$refs['fileRefs'].$refs['upload-inner'].handleClick()
    }
   })
  },