The intrinsic hardness of UI programming is representing state and state transitions. OP's problem would be much easier in a full language with things like stru

The intrinsic hardness of UI programming is representing state and state transitions. OP's problem would be much easier in a full language with things like structs and dynamic lists, but it still wouldn't be trivial People sometimes miss the point and think of UI dev as painting pictures with code, which is part of it, but the hard part is state