<el-table       ref="table"       v-loading="listLoading"       :data="tableData"       border       :row-key="getRow"       stripe       :height="tableHeight"       :header-cell-style="{'background':'#F5F4F7'}"       @selection-change="handleCurrentChange"     >       <el-table-column         type="selection"         width="50"         align="center"         fixed="left"         :resizable="false"       />       <el-table-column         type="index"         label="序号"         width="60"         fixed="left"         :index="indexMethod"         align="center"       />       <el-table-column         prop="strdate"         label="单据日期"         min-width="160"       /> </el-table> methods: {     handleCurrentChange(val) {       this.currentRow = val       this.tableData.forEach(item => {         if (val[val.length - 1] === item) {           this.$refs.table.toggleRowSelection(item, true)         } else {           this.$refs.table.toggleRowSelection(item, false)         }       })     }, }