element ui el-table表格复选框，弹框关闭取消打勾选择

  //弹框表格复选框清空 
   this.$nextTick(()=>{
     this.$refs.table.clearSelection();
   })

 <el-table ref="table" v-loading="crud.loading" :header-cell-style="{ color: '#FFF', background: '#333' }"
      :cell-style="{ color: '#FFF', background: '#333' }" :data="crud.data" style="width: 100%" :row-key="getRowKey"
      :default-sort="{ prop: 'barcode', order: 'descending' }" @selection-change="crud.selectionChangeHandler"
      @sort-change="sortChange">
      <template slot="empty">
        <span style="color: #969799">{{ $t("NeoLight.empty") }}</span>
      </template>
      <el-table-column type="selection" width="50" :reserve-selection="true" fixed="left" />

      <el-table-column prop="labelName" :sortable="true" :label="$t('labelOuput.labelGroup')" />
      <el-table-column prop="barcode.barcode" :sortable="true" :label="$t('NeoLight.barcodeNo')" />
      <el-table-column prop="barcode.partNumber" :sortable="true" :label="$t('NeoLight.stockNo')" />
      <el-table-column prop="barcode.posName" :sortable="true" :label="$t('NeoLight.storageNo')" />
      <el-table-column prop="barcode.lockName" :sortable="true" :label="$t('workOrder.workNo')" />
      <el-table-column prop="barcode.amount" :sortable="true" :label="$t('NeoLight.amount')" />
      <el-table-column prop="barcode.putInDate" :sortable="true" :label="$t('NeoLight.putInDate')" />
    </el-table>