<el-tree
ref="roleTree"
:data="treeList"
show-checkbox
node-key="MENU_ID"
:default-checked-keys="rolesVal"
:props="props"
@check-change="handleCheckChange">
</el-tree>
now I need to pass the MENU_ID of the parent node managed by the system to the backend. What to do? if it is not all selected by default, if the child node is passed directly, only if all is selected, the ID of the parent node will be passed. The official document is confused