[zubspace]

Thank you. Of all things I've ever read about react, your post is the first one who clearly explains WHY we need something like react and what fundamental problem it solves.

A frontend designer's job is to manage the state of the visible UI controls. There are lots of requirements which evolve and change during the lifetime of the project. You need to encode the application state and transition the controls according to the state. Before react, you mostly kept some variables around somewhere, added some ifs and elses which update controls, handle some events, update the state and you extend and extend and extend... and finally you have a bowl of spaghetti with some state sprinkled all around.

React separates the state from the UI update phase. Simple and elegant.