you seem to have fallen prey to overengineered examples.
that example should be
>> render -> onClick={e => this.onItemAdd(e)}
thats it, data change should re render the tree.
A simple, almost ToDo-like
you seem to have fallen prey to overengineered examples.
that example should be
>> render -> onClick={e => this.onItemAdd(e)}
thats it, data change should re render the tree.