今天遇到了el-table表格折叠时，点某行的折叠按钮时子行内容全展开问题，
想要的是点哪行哪行的子内容才展示，问题解决方案：
1、在ProTable 中加 :row-key="id" （ProTable是封装的el-table）
<ProTableref="proTable":columns="columns":data="tableData1":data-callback="dataCallback":tool-button="false":pagination="false":height="490":card="false":key="componentKey":row-key="id"><template #operation="scope"><el-button type="primary" link :icon="EditPen" @click="openTab(scope.row)">{{!scope.row.flag ? t("excel.input") : t("excel.show")}}</el-button><el-button type="primary" link :icon="Delete" @click="openDelete(scope.row)">{{ t("excel.delete") }}</el-button></template><el-table-column type="expand"><template #default="scope"><div><el-table :data="scope.row.family" ><el-table-column label="Name" prop="name" /><el-table-column label="State" prop="state" /><el-table-column label="City" prop="city" /><el-table-column label="Address" prop="address" /><el-table-column label="Zip" prop="zip" /></el-table></div></template></el-table-column></ProTable>
2、在 tableData1 中每个对象加id值
const tableData1 = [{id: 1,family: [{name: 'Jerry1',state: 'California',city: 'San Francisco',address: '3650 21st St, San Francisco',zip: 'CA 94114',}],},{id: 2,family: [{name: 'Jerry2',state: 'California',city: 'San Francisco',address: '3650 21st St, San Francisco',zip: 'CA 94114',}]}
]问题解决